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Related papers: Slow-light enhancement of Beer-Lambert-Bouguer abs…

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A critical review of experimental studies of the so-called 'slow light' arising due to anomalously high steepness of the refractive index dispersion under conditions of electromagnetically induced transparency or coherent population…

Optics · Physics 2009-11-11 E. B. Aleksandrov , V. S. Zapasskii

We experimentally demonstrate that the spectral sensitivity of a Mach-Zehnder (MZ) interferometer can be enhanced through structural slow light. We observe a 20 times enhancement by placing a dispersion-engineered-slow-light…

We report on experimental observation of electromagnetically induced transparency and slow-light (vg ~ c/607) in atomic sodium vapor, as a potential medium for a recently proposed experiment on slow-light enhanced relative rotation sensing…

Quantum Physics · Physics 2009-11-11 Renu Tripathi , G. S. Pati , M. Messall , K. Salit , M. S. Shahriar

X-ray absorption by matter has long been described by the famous Beer-Lambert law. Here we show how this fundamental law needs to be modified for high-intensity coherent x-ray pulses, now available at x-ray free electron lasers, due to the…

Materials Science · Physics 2015-09-09 Joachim Stöhr , Andreas Scherz

We investigate the propagation of a coherent probe light pulse through a three-level atomic medium (in the $\Lambda$--configuration) in the presence of a pump laser under the conditions for gain without inversion. When the carrier frequency…

Quantum Physics · Physics 2007-05-23 Filippo Caruso , Ivan Herrera , Saverio Bartalini , Francesco Cataliotti

Using spectral hole-burning-based ultraslow group velocity in a dilute solid medium, we report enhanced photon echo efficiency three orders of magnitude higher than that in a nonslow light regime. The enhancement is due to exponentially…

Quantum Physics · Physics 2011-03-02 J. Hahn , B. S. Ham

Emission and absorption of light lie at the heart of light-matter interaction. Although emission and absorption rates are regarded as intrinsic properties of atoms and molecules, various ways to modify these rates have been sought in…

Quantum Physics · Physics 2023-02-27 Daeho Yang , Seung-hoon Oh , Junseok Han , Gibeom Son , Jinuk Kim , Junki Kim , Moonjoo Lee , Kyungwon An

In recent years, photon drag has attracted enormous attention owing to both fundamental and practical interests. In this paper, by presenting a density-matrix approach, we have theoretically demonstrated an enhanced photon drag in a moving…

Optics · Physics 2018-10-02 Seyedeh Hamideh Kazemi , Mohammad Mahmoudi

We show that coupling ultracold atoms in optical lattices to quantized modes of an optical cavity leads to quantum phases of matter, which at the same time posses properties of systems with both short- and long-range interactions. This…

Quantum Gases · Physics 2016-07-06 Santiago F. Caballero-Benitez , Gabriel Mazzucchi , Igor B. Mekhov

We propose a microscopic model to describe the scattering of light by atoms in optical lattices. The model is shown to efficiently capture Bragg scattering, spontaneous emission and photonic band gaps. A connection to the transfer matrix…

Atomic Physics · Physics 2015-03-31 M. Samoylova , N. Piovella , R. Bachelard , Ph. W. Courteille

We derive and validate a set of coupled Bloch wave equations for analyzing the reflection and transmission properties of active semiconductor photonic crystal waveguides. In such devices, slow-light propagation can be used to enhance the…

Epitaxially-grown quantum well and quantum dot solar cells suffer from weak light absorption, strongly limiting their performance. Light trapping based on optical resonances is particularly relevant for such devices to increase light…

Applied Physics · Physics 2023-11-10 Maxime Giteau , Yusuke Oteki , Kento Kitahara , Naoya Miyashita , Ryo Tamaki , Yoshitaka Okada

We investigate the specific optical regime occurring at short wavelengths, in the high absorption regime, in silicon thin-films patterned by periodically arranged nano-holes. Near-field scanning optical microscopy indicates that the…

In connection with the experiments recently achieved on doped crystals, biological samples, doped optical fibers and semiconductor heterostructures, we revisit the theory of the propagation of a pulse-modulated light in a saturable…

Optics · Physics 2008-07-11 Bruno Macke , Bernard Ségard

A near-minimal instance of optical cooling is experimentally presented wherein the internal-state entropy of a single atom is reduced more than twofold by illuminating it with broadband, incoherent light. Since the rate of optical pumping…

Quantum Physics · Physics 2024-11-08 Amanda Younes , Randall Putnam , Paul Hamilton , Wesley C. Campbell

We report on very high enhancement of thin layer's absorption through band-engineering of a photonic crystal structure. We realized amorphous silicon (aSi) photonic crystals, where slow light modes improve absorption efficiency. We show…

Optical absorption measurements characterize a wide variety of systems from atomic gases to \emph{in-vivo} diagnostics of living organisms. Here we study the potential of non-classical techniques to reduce statistical noise below the…

We theoretically study the optical properties of a Fermi-Dirac gas in the presence of a superfluid state. We calculate the leading quantum-statistical corrections to the standard column density result of the electric susceptibility. We also…

Condensed Matter · Physics 2009-10-31 J. Ruostekoski

Absorption of light by a nanoparticle in the presence of resonant atom and fluorescence of the latter are theoretically investigated. It is shown, that absorption of light by a nanoparticle can be increased by several orders because of…

Optics · Physics 2007-05-23 Gennady N. Nikolaev

The pronounced light-matter interactions in photonic crystals make them interesting as opto-fludic "building blocks" for lab-on-a-chip applications. We show how conducting electrolytes cause dissipation and smearing of the…

Optics · Physics 2007-05-23 Niels Asger Mortensen , Simon Ejsing , Sanshui Xiao