Results 51 to 60 of about 220,832 (286)

Generating of Chaotic Signals by using Semiconductor Laser with Optical Feedback [PDF]

Engineering and Technology Journal, 2011
This paper addresses theoretically generating the chaotic signals by using semiconductor laser diode of 1550 nm with optical feedback. The performance of a semiconductor laser subjected to a delay optical feedback was investigated using rate equations ...
Shatha M. Hasan, Mohammed S. Mehde, Raad S. Fyath   +2 more
doaj   +1 more source

Recent developments in monolithic integration of InGaAsP/InP optoelectronic devices [PDF]

, 1982
Monolithically integrated optoelectronic circuits combine optical devices such as light sources (injection lasers and light emitting diodes) and optical detectors with solid-state semiconductor devices such as field effect transistors, bipolar ...
Bar-Chaim, Nadav, Chen, T. R., Koren, Uziel, Lau, Kam Y., Margalit, Shlomo, Ury, Israel, Yariv, Amnon, Yu, K. L.   +7 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

Lasers incorporating two-dimensional photonic crystal mirrors [PDF]

, 1997
Photonic bandgap crystals are expected to be of use in defining microcavities for modifying spontaneous emission and as highly reflective mirrors. There are several reports of microfabricating one-dimensional structure.
Cheng, C. C., D'Urso, Brian, Lee, Reginald, O'Brien, John, Painter, Oskar, Yariv, Amnon   +5 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

The features of modelling semiconductor lasers with a wide contact

EPJ Web of Conferences, 2017
The aspects of calculating the dynamics and statics of powerful semiconductor laser diodes radiation are investigated. It takes into account the main physical mechanisms influencing power, spectral composition, far and near field of laser radiation.
Rzhanov Alexey
doaj   +1 more source

Singly-resonant sum frequency generation of visible light in a semiconductor disk laser [PDF]

, 2009
In this paper a generic approach for visible light generation is presented. It is based on sum frequency generation between a semiconductor disk laser and a solid-state laser, where the frequency mixing is achieved within the cavity of the semiconductor ...
Christian Pedersen, Driscoll, Härkönen, Janousek, Jennifer E. Hastie, Johansson, Johansson, Karamehmedovic, Kim, Lundeman, Martin D. Dawson, Martin T. Andersen, Peter J. Schlosser, Peter Tidemand-Lichtenberg, Preuss, Schneider, Schriever   +16 more
core   +1 more source

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

Reduction of relative intensity noise of the output field of semiconductor lasers due to propagation in dispersive optical fiber [PDF]

, 1996
The effect of dispersive, linear propagation (e.g., in single-mode optical fiber) on the intensity noise from semiconductor lasers is investigated. Relations between the frequency and amplitude noise variations of semiconductor lasers are obtained from ...
Marshall, W. K., Paslaski, J., Yariv, A.
core   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source