Results 41 to 50 of about 20,822 (258)

Optical Bistability and Thermal Mode Hopping in External Cavity Feedback Semiconductor Lasers

Photonics, 2023
The external cavity feedback semiconductor laser shows obvious optical bistability in practice. That is, at the same operating temperature, different temperature tuning directions will lead to different laser mode outputs.
Da Meng, Haiyang Yu, Yejin Zhang, Jianguo Liu   +3 more
doaj   +1 more source

Optical bistability in nonlinear system with two loops of feedback

, 2010
A model of nonlinear optical system surrounded by two loops of feedback is investigated. The cell with the vapor of rubidium - type atoms is taken in the capacity of nonlinear element. Two modes of near-resonant electromagnetic field interacting with the
Miroshnichenko, George P., Trifanov, Alexander I.   +1 more
core   +1 more source

Hyperfine interaction in InAs/GaAs self-assembled quantum dots : dynamical nuclear polarization versus spin relaxation [PDF]

, 2008
We report on the influence of hyperfine interaction on the optical orientation of singly charged excitons X+ and X- in self-assembled InAs/GaAs quantum dots.
Abragam, Akimov, Aristide Lemaître, Benoît Eble, Bernhard Urbaszek, Braun, Braun, Cortez, Dzhioev, Eble, Ediger, Flissikowski, Gammon, Greilich, Kaji, Koppens, Kroner, Kroutvar, Lai, Laurent, Maletinsky, Maletinsky, Meier, Merkulov, Olivier Krebs, Oulton, Paget, Paul Voisin, Tartakovskii, Thierry Amand, Urbaszek, Warburton, Xavier Marie, Yokoi   +33 more
core   +4 more sources

Remnants of semiclassical bistability in the few-photon regime of cavity QED

, 2011
Broadband homodyne detection of the light transmitted by a Fabry-Perot cavity containing a strongly-coupled $^{133}$Cs atom is used to probe the dynamic optical response in a regime where semiclassical theory predicts bistability but strong quantum ...
Aoki, Armen, Armen, Barchielli, DiCarlo, Doherty, Drever, Faraon, Gang, Gang, Hideo Mabuchi, Hood, Joseph Kerckhoff, Kerckhoff, Kerckhoff, Kilin, Mabuchi, Mabuchi, Mabuchi, Michael A. Armen, Miller, Nozaki, O’Brien, Rempe, Savage, Smith, Srinivasan, Szöke, Tan, Yang   +29 more
core   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

Bistability and All-Optical Memory in Dual-Mode Diode Lasers With Time-Delayed Optical Feedback

IEEE Photonics Journal, 2012
A proposal for an all-optical memory based on a bistability of single-mode states in a dual-mode diode laser with time-delayed optical feedback is presented.
N. Brandonisio, P. Heinricht, S. Osborne, A. Amann, S. O'Brien   +4 more
doaj   +1 more source

Emission spectra and intrinsic optical bistability in a two-level medium

, 2010
Scattering of resonant radiation in a dense two-level medium is studied theoretically with account for local field effects and renormalization of the resonance frequency.
A. Kuditcher, A. Nick Vamivakas, C.M. Bowden, C.M. Bowden, D. V. Kuznetsov, D.R. Gamelin, D.V. Novitsky, E.B. Flagg, F. Ciccarello, F. Ciccarello, F.A. Hopf, J.M. Ward, K.D. Zhu, L. Li, L. Li, M. Fleischhauer, M. G. Gladush, M. Gladush, M. Gladush, M.A. Noginov, M.E. Crenshaw, M.G. Benedict, M.P. Hehlen, M.P. Hehlen, M.P. Hehlen, O. Astafiev, O. Guillot-Noël, O. Guillot-Noël, O. Guillot-Noël, P. de Vries, S. Ates, S.M. Redmond, S.R. Lüthi, Vl. K. Roerich, Y. Ben-Aryeh, Y. Ben-Aryeh, Y. Gu   +36 more
core   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Study of optical bistability based on hybrid-cavity semiconductor lasers

AIP Advances, 2019
All-optical flip-flop has been demonstrated experimentally based on our optical bistable hybrid square-rectangular lasers. In this paper, dual-mode rate equations are utilized for studying the optical bistability in the two-section hybrid-coupled ...
Fu-Li Wang, Yong-Zhen Huang, Yue-De Yang, Chun-Guang Ma, You-Zeng Hao, Min Tang, Jin-Long Xiao   +6 more
doaj   +1 more source

All-optical memory based on the injection locking bistability of a two-color laser diode

, 2008
We study the injection locking bistability of a specially engineered two-color semiconductor Fabry-Perot laser. Oscillation in the uninjected primary mode leads to a bistability of single mode and two-color equilibria.
A. Amann, Bauer, Fischer, Heil, Hill, Ishii, Jeong, K. Buckley, Kawaguchi, Kovanis, Mori, Otsuka, O’Brien, O’Brien, Raburn, Ramos, S. Osborne, S. O’Brien, Schikora, Sciamanna, Simpson, Tanguy, Varangis, Wang, White, Wieczorek, Zhukovsky   +26 more
core   +1 more source