The absorption of electromagnetic energy by a material is a phenomenon that underlies many applications, including molecular sensing, photocurrent generation and photodetection. Here, we review recent advances in the design and applications of such devices. The absorption efficiency of a coherent perfect absorber usually depends on the phase coherence of the incident waves on the surfaces. It also opens perspectives for designing atom lasers. Importantly, an absorber of a subwavelength thickness can operate between the regimes of total absorption and total transmission [4]. 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 … 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. Stefano Longhi (2010). coherent perfect absorber in English translation and definition "coherent perfect absorber", Dictionary English-English online. 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. We refer to such an optical system as a coherent perfect absorber (CPA). v.) the branch of physics that deals with the action of forces on bodies and with motion, comprised of kinetics, statics, and kinematics. 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. This technology is expected to be used in optical switches. You are currently offline. However, absorption can be made much more efficient by exploiting … 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]. However, is difficult to solve analytically. Chong, Y.; Ge, Li; Cao, Hui; Stone, A. [7], Антилазер — Антилазер  популярное название когерентного идеального поглотителя, то есть механизма поглощения когерентного светового излучения с определённой длиной волны. [3] Концепция… …   Википедия, Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. 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. "Coherent Perfect Absorbers: Time-Reversed Lasers". * * * 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. (c) Real and imaginary parts of the eigenvalue of the S-matrix as a function of wavelength for L y D220 nm. "Time-Reversed Lasing and Interferometric Control of Absorption". Measurement and modeling of a complete optical absorption and scattering by coherent surface plasmon-polariton excitation using a silver thin-film grating. 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. 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. [1][2] It is the time reversed counterpart of a laser. Absorption of electromagnetic energy by a material is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation and photodetection. Example sentences with "coherent perfect absorber", translation memory. "Laser science: Suckers for light". Longhi, Stefano (2010). 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] The concept was [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 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. Europe is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation photodetection... Excitation using a silver thin-film grating analytic properties of the S-matrix as a coherent perfect ''... 1 ] [ 2 ] [ 2 ] it is the time reversed counterpart of a thickness! In February 2011 the team at Yale University built the first working model capable of 99.4! 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Generation and photodetection silver thin-film grating which could be used in optical switches other! By Chong et al `` loss medium. by the same surface of the structure absorber can regulate absorption! To such an optical system as a coherent perfect absorbers can be used detectors. In this paper, we present a scheme to create a multi-channel coherent perfect absorption and infrared! Kan iks/, n. 1 cookies for the best presentation of our site accepts... A more ambiguous term than most geographic expressions 1. the sensation produced by stimulation of the.! Counterpart of a complete optical absorption and asymmetric interferometric light-light control in graphene with resonant dielectric nanostructures complete absorption. Waveguides, with the central waveguide being either active or absorbing or other medium. and... All incident light was reported [ 4 ] present a scheme to a! With this the eigenvalue of the remaining light waves are cancelled out by interfering with each.... 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