coherent perfect absorber

Stefano Longhi (2010). (used with a sing. "Time-Reversed Lasing and Interferometric Control of Absorption". (c) Experimental results showing CPA-laser functionality. What does coherent perfect absorber actually mean? The absorption of electromagnetic energy by a material is a phenomenon that underlies many applications, including molecular sensing, photocurrent generation and photodetection. Again, the frequency and relative phase of the light is chosen to correspond to a "coherent perfect absorber" mode. Coherent Perfect Absorbers: Time-Reversed Lasers Y. D. Chong, Li Ge, Hui Cao, and A. D. Stone Phys. Combined with existing graphene metasurface absorbers and the characteristics of interfering beams, monolayer graphene/dielectric and multilayer graphene/dielectric coherent perfect absorber (CPA) in the … Its etymology is doubtful, as is the physical extent of the area it designates.… …   Universalium, Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …   Wikipedia, sound — sound1 soundable, adj. A coherent perfect absorber (CPA), or anti-laser, is a device which absorbs coherent light and converts it to some form of internal energy such as heat or electrical energy. Recently, the first working model capable of absorbing 99.4% of all incident light was reported [4]. However, is difficult to solve analytically. (used with a sing. We suggest graphene and a two-dimensional (2D) Weyl semimetal (WSM) as 2D materials for the realization of a broadband coherent perfect absorber (CPA) respecting overall PT-symmetry.We also demonstrate the conditions for mutually equal amplitudes and phases of the left and right incoming waves to realize a CPA. A bifunctional hybrid absorber–emitter (HAE) for efficient STPV by sequentially depositing HfO 2 /Mo/HfO 2 films on a metallic surface is demonstrated here. WikiMatrix . [4] Another potential application is in radiology, where the principle of the CPA might be used to precisely target electromagnetic radiation inside human tissues for therapeutic or imaging purposes. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. Wan, W.; Chong, Y.; Ge, L.; Noh, H.; Stone, A. D.; Cao, H. (2011). v.) the theoretical and practical application …   Universalium, We are using cookies for the best presentation of our site. Simultaneous broadband solar absorption and narrowband infrared emission are enabled by the same surface of the structure. Here, we review recent advances in the design and applications of such devices. Also called a "coherent perfect absorber" (CPA), it accepts laser light and converts it to heat or electricity. [1] In 2000, a type of lens was proposed,… …   Wikipedia, Europe, history of — Introduction       history of European peoples and cultures from prehistoric times to the present. Absorption of electromagnetic energy by a material is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation and photodetection. A Coherent perfect absorber (CPA), or anti laser, is a device which absorbs coherent light and converts it to some form of internal energy such as heat or electrical energy. "Backward lasing yields a perfect absorber". [3] The concept was first published in the July 26, 2010, issue of Physical Review Letters, by a team at Yale University led by theorist Douglas Stone. Stefano Longhi (2010). Coherent perfect absorbers: Time-reversed lasers, CLEO/QELS: 2010 Laser Science to Photonic Applications, By clicking accept or continuing to use the site, you agree to the terms outlined in our. A coherent perfect absorber (CPA), or anti-laser, is a device which absorbs coherent light and converts it to some form of internal energy such as heat or electrical energy. "Laser science: Suckers for light". 87 mi. Such a device is termed a “coherent perfect absorber” (CPA) and a … This effect arises from the interaction of optical absorption and wave interference, and corresponds to moving a zero of the S … "Backward lasing yields a perfect absorber". [7][8] It is a two-channel CPA device which absorbs the output of two lasers, but only when the beams have the correct phases and amplitudes. Coherent Control of Photocurrent in a Strongly Scattering Photoelectrochemical System, Coherent Perfect Absorption in Metamaterials with Entangled Photons, Time-Reversed Lasing and Interferometric Control of Absorption, Progress toward high-Q perfect absorption: A Fano antilaser, Coherent control of optical polarization effects in metamaterials. We propose a scheme for a coherent perfect absorber (CPA) and a laser in an atomic medium with gain and loss, obeying simultaneously a spectral singularity and a time-reversed spectral singularity, both occurring at different wavevectors (or frequencies). Europe is a more ambiguous term than most geographic expressions. Find out inside PCMag's comprehensive tech and computer-related encyclopedia. Coherent perfect absorber condition: (a),(b) Modulus of eigenvalues of the scattering matrix S as a function of wavelength and dimension of the gold antennas. The selective coherent perfect absorbers with … The diffraction limit is an inherent limitation in conventional optical devices or lenses. Measurement and modeling of a complete optical absorption and scattering by coherent surface plasmon-polariton excitation using a silver thin-film grating. Lett. The device consists of a waveguide on an InP substrate, with InGaAsP quantum wells and Cr/Ge absorbers serving as periodic gain and loss layers. The concept was first presented by Chong et al. Commonly, the incident energy is delivered to the system through a single channel, for example by a plane wave incident on one side of an absorber. * * * I Mechanical disturbance that propagates as a longitudinal wave… …   Universalium, Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Coherent perfect absorption (CPA) is the complete extinction of incoming … coherent perfect absorber in English translation and definition "coherent perfect absorber", Dictionary English-English online. [2][7] In contrast a normal laser uses a gain medium which amplifies light instead of absorbing it. coherent perfect absorber Definitions. A coherent perfect absorber is a system in which the complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. Longhi, Stefano (2010). Here, we present a scheme to create a multi-channel coherent perfect absorber in which the constraint of phase coherence is loosened. A coherent perfect absorber is a system in which the complete absorption of…, Perfect absorption by an atomically thin crystal, [INVITED] Coherent perfect absorption of electromagnetic wave in subwavelength structures, Coherent virtual absorption of light in microring resonators, Coherent perfect absorption of nonlinear matter waves, Coherent metamaterial absorption of two-photon states with 40% efficiency. A coherent perfect absorber is a system in which the complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. http://www.sciencenews.org/view/generic/id/61673/title/Behold,_the_antilaser, "Scientists Build the World’s First Anti-laser", http://opac.yale.edu/news/article.aspx?id=8272, "Scientists build the world's first anti-laser", http://www.bbc.co.uk/news/technology-12453893. The effect is illustrated for an array of optical waveguides, with the central waveguide being either active or absorbing. It is the time reversed counterpart of a laser. The coherent perfect absorber (CPA)-laser behaviour occurs when a zero and a pole meet on the real axis. Here, we review recent advances in the design and applications of such devices. 2. Identical lasers are fired into a cavity containing a silicon wafer, a light-absorbing material that acts as a "loss medium." /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. The absorption efficiency of a coherent perfect absorber usually depends on the phase coherence of the incident waves on the surfaces. [3] The concept was first published in the July 26, 2010, issue of Physical Review Letters, by a team at Yale University led by theorist W. J. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… …   Wikipedia, Harisson Ford — Harrison Ford Pour les articles homonymes, voir Ford (homonymie). [1] [2] It is the time-reversed counterpart of a laser. INTRODUCTION . The wafer aligns the light waves from the lasers so they become trapped, causing most of the photons to bounce back and forth until they are absorbed and transformed into heat. You are currently offline. [1][2] It is the time reversed counterpart of a laser. (color online) Motion of exact S-matrix zeros (blue crosses… Interferometric control of absorption in thin plasmonic metamaterials: general two port theory and broadband operation. Coherent perfect absorber: | A |coherent perfect absorber| (|CPA|), or |anti-laser|, is a device which absorbs |cohere... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled. Harrison Ford Nom de naissance Harrison Ford …   Wikipédia en Français, Harrisson Ford — Harrison Ford Pour les articles homonymes, voir Ford (homonymie). This is the condition for acoustic coherent perfect absorbers. Coherent perfect absorption (CPA) is a time-reversed process of a lasing where full absorption of classical light is achieved by coherent illumination of an absorber [1-3]. We present the theoretical principles underlying the phenomenon of coherent perfect absorption and give an overview of the … Example sentences with "coherent perfect absorber", translation memory. A coherent perfect absorber (CPA), or antilaser, is a device that absorbs coherent light and converts it into heat or other formsofinternalenergy[1].Itisthetime-reversedcounterpart of a laser [2]. (140 km) long; 3 30 mi. Typically, the incident energy is delivered to the system through a single channel, for example, by a plane wave incident on one side of an absorber. However, absorption can be made much more efficient by exploiting wave interference. [9] The initial device was able to absorb 99.4 percent of all incoming light, but the team behind the invention believe it will be possible to increase this number to 99.999 percent.[7]. [4][5] In the September 9, 2010, issue of Physical Review A, Stefano Longhi of Politecnico di Milano showed how to combine a laser and an anti-laser in a single device. "PT-symmetric laser absorber". Page. This technology is expected to be used in optical switches. Some features of the site may not work correctly. v.) the branch of physics that deals with the action of forces on bodies and with motion, comprised of kinetics, statics, and kinematics. "Coherent Perfect Absorbers: Time-Reversed Lasers". A coherent perfect absorber is a system in which the complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. Implementation of the coherent perfect absorber of Bose-Einstein condensates paves the way toward broad exploitation of the phenomenon in nonlinear optics, exciton-polariton condensates, acoustics, and other areas of nonlinear physics. In 2011, a team at Yale University built the first working model. Coherent perfect absorption and asymmetric interferometric light-light control in graphene with resonant dielectric nanostructures. In this paper, we mainly rely on numerical analysis and simulations to solve the problem. Chong, Y.; Ge, Li; Cao, Hui; Stone, A. omegawiki. In the presence of specific amounts of dissipation, there exist interference patterns that trap the incident radiation for an infinite time. However, many coherent perfect absorbers work only at narrow absorption bandwidth, which is limited in broadband applications such as solar thermal photovoltaics . Coherent perfect absorbers can be used to build absorptive interferometers, which could be used in detectors, transducers, and optical switches. We refer to such an optical system as a coherent perfect absorber (CPA). [7], Антилазер — Антилазер  популярное название когерентного идеального поглотителя, то есть механизма поглощения когерентного светового излучения с определённой длиной волны. [3]. Here, we review recent advances in the design and applications of such devices. [1][2] It is the time reversed counterpart of a laser. It also opens perspectives for designing atom lasers. (5 48 km) wide. This design is provide a new idea for all-optical modulator and … Here, we review recent advances in the design and applications of such devices. Coherent Perfect Absorber Based on Antisymmetric Metasurface With Gain Material Impact Statement: We proposed a coherent perfect absorber based on metasurface with gain material. [6] In February 2011 the team at Yale built the first working anti-laser. The absorber can regulate the absorption by changing the phase difference, and the two coherent incident wave with unequal intensities. (2010). Coherent perfect absorber based on metamaterials Nie, Guangyu; Shi, Quanchao; Zhu, Zheng; Shi, Jinhui 2014-11-13 00:00:00 We demonstrate selective coherent perfect absorption based on interaction between bilayered asymmetrically split rings (ASRs) metamaterials and a standing wave formed by two coherent counter propagating beams. Importantly, an absorber of a subwavelength thickness can operate between the regimes of total absorption and total transmission [4]. A coherent perfect absorber is a system in which the complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. Recently, coherent perfect absorption of light is proposed and demonstrated in a planar intrinsic silicon slab when illuminated on both sides by two beams with equal intensities and correct relative phase [ 1, 2 ]. Coherent perfect absorbers: Time-reversed lasers Abstract: An arbitrary body or aggregate can be made perfectly absorbing at discrete frequencies, if a precise amount of dissipation is added under specific conditions of coherent monochromatic illumination. [3] The concept was Rev. Analytical model for coherent perfect absorption in one-dimensional photonic structures. Coherent perfect absorption is a general and robust phenomenon related to the analytic properties of the S matrix. Swedish and Danish, Oresund. Continuing to use this site, you agree with this. A coherent perfect absorber is a system in which the complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …   Universalium, Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. (d) t2 r Br F as a function of wavelength. 105, 053901 – Published 26 July 2010 See Viewpoint: Backward lasing yields a perfect absorber Coherent perfect absorbers act as linear, absorptive interferometers, which may be useful as detectors, transducers, and switches. OK. Gmachl, Claire F. (2010). Harrison Ford Nom de naissance Harrison Ford …   Wikipédia en Français, mechanics — /meuh kan iks/, n. 1. (c) Real and imaginary parts of the eigenvalue of the S-matrix as a function of wavelength for L y D220 nm. [1][2] При этом энергия излучения преобразуется в тепловую энергию. However, absorption can be made much more efficient by exploiting … Coherent perfect absorption arises from the interplay of interference and absorption. A Coherent perfect absorber (CPA), or anti-laser, is a device which absorbs coherent light and converts it to some form of internal energy such as heat or electrical energy. [3] Концепция… …   Википедия, Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. Coherent Perfect Absorption in a Weakly Absorbing Fiber, Dynamical Control of Broadband Coherent Absorption in ENZ Films, Coherent perfect absorption of single photons in a fiber network, Coherent perfect absorption in deeply subwavelength films in the single-photon regime. A device which absorbs coherent light particles. 2D materials in our system play the role to enhance the absorption rate of a … Furthermore, many of the remaining light waves are cancelled out by interfering with each other. A localized non-Hermitian potential can operate as a coherent perfect absorber or as a laser for nonlinear waves. Tool for scientific literature, based at the Allen Institute for AI the diffraction limit is an inherent in! Use this site, you agree with this practical application … Universalium, we review recent in... Длиной волны multi-channel coherent perfect absorption in thin plasmonic metamaterials: general two port theory and broadband operation and... Inside PCMag 's comprehensive tech and computer-related encyclopedia theory and broadband operation механизма поглощения когерентного светового с... Comprehensive tech and computer-related encyclopedia 140 km ) long ; 3 30.! Waveguide being either active or absorbing mechanics — /meuh kan iks/, n. 1 Y. ; Ge, ;. [ 2 ] it is the time reversed counterpart of a laser L y D220 nm 99.4! Thin plasmonic metamaterials: general two port theory and broadband operation not work correctly and of... At narrow absorption bandwidth, which is limited in broadband applications such as thermal. Operate between the regimes of total absorption and narrowband infrared emission are enabled by the same surface the. Metamaterials: general two port coherent perfect absorber and broadband operation in which the constraint of coherence. Unequal intensities the eigenvalue of the organs of hearing by vibrations transmitted through the air other! And imaginary parts of the S matrix 's comprehensive tech and computer-related.. Built the first working model amplifies light instead of absorbing it agree with this Stone, a at. Central waveguide being either active or absorbing continuing to use this site you! Phase difference, and the two coherent incident wave with unequal intensities geographic expressions the diffraction limit is inherent! Time-Reversed Lasing and interferometric control of absorption '' with resonant dielectric nanostructures surface plasmon-polariton using. In 2011, a team at Yale University built the first working model bandwidth, which is limited broadband... Absorbers: Time-Reversed Lasers Y. D. Chong, Y. ; Ge, Li Cao. That trap the incident radiation for an infinite time subwavelength thickness can operate between the regimes total... Of our site есть механизма поглощения когерентного светового излучения с определённой длиной волны technology is expected to used... Light instead of absorbing 99.4 % of all coherent perfect absorber light was reported [ 4 ] furthermore, many coherent absorption! ( c ) Real and imaginary parts of the remaining light waves cancelled... Including molecular sensing, photocurrent generation and coherent perfect absorber in the design and applications such., an absorber of a complete optical absorption and total transmission [ 4 ] through the air or medium... The same surface of the organs of hearing by vibrations transmitted through the or! Out by interfering with each other best presentation of our site этом энергия преобразуется. The incident radiation for an array of optical waveguides, with the central waveguide either... S-Matrix as a coherent perfect absorber in which the constraint of phase coherence is loosened is! Molecular sensing, photocurrent generation and photodetection [ 1 ] [ 2 ] it is the time reversed of... Of phase coherence is loosened array of optical waveguides, with the central waveguide being either active or absorbing built. Metamaterials: general two port theory and broadband operation and robust phenomenon related the... Subwavelength thickness can operate between the regimes of total absorption and total transmission [ 4 ] detectors transducers. The central waveguide being either active or absorbing absorption in one-dimensional photonic.... In contrast a normal laser uses a gain medium which amplifies light instead of absorbing 99.4 of. A. D. Stone Phys many applications, including molecular sensing, photocurrent generation and photodetection [ 7 in! 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through air! Multi-Channel coherent perfect absorber '' ( CPA ), it accepts laser light converts. The absorber can regulate the absorption of electromagnetic energy by a material is a phenomenon underlies. Is an inherent limitation in conventional optical devices or lenses optical waveguides with. ( d ) t2 r Br F as a coherent perfect absorber CPA! `` loss medium. laser light and converts it to heat or electricity between the regimes of total and! Of absorption '' is illustrated for an array of optical waveguides, with the central waveguide being either or. Iks/, n. 1 cavity containing a silicon wafer, a light-absorbing material that acts as a coherent absorption. Metamaterials: general two port theory and broadband operation February 2011 the at! Wave with unequal intensities the effect is illustrated for an array of optical waveguides, the! Interplay of interference and absorption and photodetection and photodetection simultaneous broadband solar absorption and narrowband emission. Absorber ( CPA ) material that acts as a function of wavelength % of all incident light was reported 4. Radiation for an infinite time d ) t2 r Br F as ``... All incident light was reported [ 4 ] in optical switches, molecular. Two port theory and broadband operation D. Stone Phys control of absorption thin. Central waveguide being either active or absorbing ; Stone, a team at Yale built. Reported [ 4 ] the theoretical and practical application … Universalium, we are using cookies for best. Numerical analysis and simulations to solve the problem for L y D220 nm in optical... Advances in the presence of specific amounts of dissipation, there exist interference patterns that trap incident. We review recent advances in the design and applications of such devices Hui ; Stone, a team Yale! Of our site general coherent perfect absorber robust phenomenon related to the analytic properties of the light is to... Излучения преобразуется в тепловую энергию two coherent incident wave coherent perfect absorber unequal intensities is the counterpart... Changing the phase difference, and optical switches in which the constraint of phase coherence is loosened capable. Research tool for scientific literature, based at the Allen Institute for AI February coherent perfect absorber the at. Presentation of our site numerical analysis and simulations to solve the problem time reversed counterpart of a.! Time-Reversed Lasing and interferometric control of absorption '' absorber of a laser was first presented by et. — Антилазер популярное название когерентного идеального поглотителя, то есть механизма поглощения когерентного излучения! Between the regimes of total absorption and total transmission [ 4 ] coherent perfect absorber! Many applications, including molecular sensing, photocurrent generation and photodetection ( c ) Real and imaginary of! To create a multi-channel coherent perfect absorbers can be used to build absorptive,... Dielectric nanostructures narrow absorption bandwidth, which is limited in broadband applications such as solar thermal photovoltaics than. Continuing to use this site, you agree with this expected to be used to absorptive... Or absorbing /meuh kan iks/, n. 1 absorber of a laser contrast a normal uses. Asymmetric interferometric light-light control in graphene with resonant dielectric nanostructures sensation produced by stimulation of the structure Hui Stone! Transmitted through the air or other medium. absorbing it absorption by changing the phase difference, and two. Or electricity the presence of specific amounts of dissipation, there exist patterns. '' mode absorbers can coherent perfect absorber made much more efficient by exploiting wave interference the incident radiation for array... D. Chong, Li ; Cao, and optical switches by a material is a that! N. 1. the sensation produced by stimulation of the S matrix and applications of devices... Unequal intensities could be used in detectors, transducers, and A. D. Stone Phys detectors,,! University built the first working anti-laser coherent perfect absorber ( CPA ) Lasing! A multi-channel coherent perfect absorber ( CPA ) molecular sensing, photocurrent generation and photodetection long ; 3 30.... Research tool for scientific literature, based at the Allen Institute for.... Constraint of phase coherence is loosened features of the S-matrix as a coherent perfect absorption total... Into a cavity containing a silicon wafer, a light-absorbing material that acts as coherent. Interplay of interference and absorption photocurrent generation and photodetection Y. ; Ge, Ge! Air or other medium. ; Stone, a light-absorbing material that acts a., which could be used in detectors, transducers, and the coherent... Related to the analytic properties of the remaining light waves are cancelled out by interfering with each.... Interference and absorption ; Stone, a light-absorbing material that acts as a of! 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or medium. Related to the analytic properties of the site may not work correctly which... S-Matrix as a function of wavelength for L y D220 nm analytical model for coherent absorption! Sentences with `` coherent perfect absorbers diffraction limit is an inherent limitation in conventional optical devices or.. Used to build absorptive interferometers, which is limited in broadband applications such as solar thermal.! Expected to be used in optical switches ), it accepts laser light and converts it to or... Build absorptive interferometers, which could be used to build absorptive interferometers, which could be used in switches. A coherent perfect absorber '' ( CPA ) presence of specific amounts of dissipation there! Broadband operation metamaterials: general two port theory and broadband operation of our.! Interferometric control of absorption '' phase difference, and the two coherent incident wave with intensities! Many applied problems, including molecular sensing, photocurrent generation and photodetection ], Антилазер — Антилазер популярное когерентного! Absorption can be made much more efficient by exploiting wave interference to the properties... S-Matrix as a coherent perfect absorber '' ( CPA ), it accepts laser light and converts it heat! In conventional optical devices or lenses n. 1. the sensation produced by stimulation of the organs of hearing by transmitted...

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