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We consider the phase stability of a local oscillator (or laser) locked to a cavity QED system comprised of atoms with an ultra-narrow optical transition. The atoms are cooled to millikelvin temperatures and then released into the optical…

Quantum Physics · Physics 2015-06-30 D. A. Tieri , J. Cooper , Bjarke T. R. Christensen , J. W. Thomsen , M. J. Holland

A comparative analysis of two approaches to description of the light modulation pulse delay in a saturable absorber is presented. According to the simplest model, the delay of the optical pulse is a result of distortion of its shape due to…

Optics · Physics 2015-05-27 V. S. Zapasskii , G. G. Kozlov

We theoretically and experimentally study the noise of a class-A dual-frequency vertical external cavity surface emitting laser operating at Cesium clock wavelength. The intensity noises of the two orthogonally polarized modes and the phase…

Instrumentation and Detectors · Physics 2018-12-19 Hui Liu , Grégory Gredat , Ghaya Baili , François Gutty , Fabienne Goldfarb , Isabelle Sagnes , Fabien Bretenaker

We show that the group velocity of a probe pulse in an ensemble of $\Lambda$-type atoms driven by a quantized cavity mode depends on the quantum state of the input probe pulse. In the strong-coupling regime of the atom-cavity system the…

Quantum Physics · Physics 2015-05-14 Gor Nikoghosyan , Michael Fleischhauer

We propose and numerically test a novel concept for asymmetric vortex beam generation in a Degenerate Vertical External Cavity Surface Emitting Laser (DVECSEL). The method is based on a phase-locking ring array of lasers created inside a…

Optics · Physics 2024-09-30 Sopfy Karuseichyk , Ilan Audoin , Vishwa Pal , Fabien Bretenaker

We report on the fast production and weakly destructive detection of a Fermi gas with tunable interactions in a high finesse cavity. The cavity is used both with far off-resonant light to create a deep optical dipole trap, and with…

Quantum Gases · Physics 2021-05-26 Kevin Roux , Victor Helson , Hideki Konishi , Jean-Philippe Brantut

Lasers with high spectral purity are indispensable for optical clocks and coherent manipulation of atomic and molecular qubits for applications such as quantum computing and quantum simulation. Stabilisation of the laser to a reference can…

Quantum Physics · Physics 2023-11-13 Ludwig Krinner , Kai Dietze , Lennart Pelzer , Nicolas Spethmann , Piet O. Schmidt

We present a microscopic laser model for many atoms coupled to a single cavity mode, including the light forces resulting from atom-field momentum exchange. Within a semiclassical description, we solve the equations for atomic motion and…

Quantum Physics · Physics 2007-12-18 Thomas Salzburger Helmut Ritsch

Vectorial nature of dissipative solitons (DSs) with high repetition rates is studied for the first time in a normal-dispersion fiber laser. Despite the fact that the formed DSs are strongly chirped and the repetition rate is greater than…

Optics · Physics 2016-08-24 Yiyang Luo , Deming Liu , Lei Li , Qizhen Sun , Zhichao Wu , Zhilin Xu , Songnian Fu , Luming Zhao

Highly stable laser sources based on narrow atomic transitions provide a promising platform for direct generation of stable and accurate optical frequencies. Here we investigate a simple system operating in the high-temperature regime of…

Vertical cavity surface emitting terahertz lasers can be realized in conventional semiconductor microcavities with embedded quantum wells in the strong coupling regime. The cavity is to be pumped optically at half the frequency of the 2p…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 A. V. Kavokin , I. A. Shelykh , T. Taylor , M. M. Glazov

Indoor visible light communication (VLC) is considered secure against attackers outside the confined area where the light propagates, but it is still susceptible to interception from inside the coverage area. A new technology, intelligent…

Information Theory · Computer Science 2025-02-11 Rashid Iqbal , Mauro Biagi , Ahmed Zoha , Muhammad Ali Imran , Hanaa Abumarshoud

A very simple and efficient evaluation procedure is suggested for the design of high power single mode VCSELs by reviewing the physical mechanisms that governs mode transition and simplifying the computation steps. In addition, the new…

Optics · Physics 2018-05-09 Young-Gu Ju

We report the experimental evidence of noise-induced phase synchronization in a vertical cavity laser. The polarized laser emission is entrained with the input periodic pump modulation when an optimal amount of white, gaussian noise is…

Statistical Mechanics · Physics 2009-11-10 S. Barbay , G. Giacomelli , S. Lepri , A. Zavatta

Frequency upshifts have been proposed as a first experimental signature of collective effects in QED cascade generated electron-positron pair plasmas. Since the high effective masses of generated pairs will reduce any frequency change,…

Plasma Physics · Physics 2022-07-27 Alec Griffith , Kenan Qu , Nathaniel J. Fisch

We demonstrate slowing and longitudinal cooling of a supersonic beam of CaF molecules using counter-propagating laser light resonant with a closed rotational and almost closed vibrational transition. A group of molecules are decelerated by…

We discuss the prospects for enhancing absorption and scattering of light from a weakly coupled atom in a high-finesse optical cavity by adding a medium with large, positive group index of refraction. The slow-light effect is known to…

Atomic Physics · Physics 2017-10-10 B. Megyeri , A. Lampis , G. Harvie , R. Culver , J. Goldwin

Multiple controllable spiking patterns are obtained in a 1310 nm Vertical Cavity Surface Emitting Laser (VCSEL) in response to induced perturbations and for two different cases of polarized optical injection, namely parallel and orthogonal.…

Optics · Physics 2016-01-20 Antonio Hurtado , Julien Javaloyes

Single-cavity dual-comb lasers are a new class of ultrafast lasers which have a wide possible application space including pump-probe sampling, optical ranging, and gas absorption spectroscopy. However, to this date laser cavity multiplexing…

Recent manifestations of apparently faster-than-light effects confirmed our predictions that the group velocity in transparent optical media can exceed c. Special relativity is not violated by these phenomena. Moreover, in the electronic…

Performance · Computer Science 2015-06-25 Raymond Y. Chiao , Jandir M. Hickmann , Daniel Solli