Publication

Photon and Carrier Density Profiles in a Semiconductor Optical Amplifier

Jean-Louis Staehli
1993
Journal Articles

Abstract

We investigate, experimentally and theoretically, the optical amplification and its saturation in a mirrorless semicondctor quantum well laser. We optically excite a narrow stripe of variable length and measure the profiles of spontaneous and stimulated luminescence spectra. Comparison of theory and experiment reveals that saturation is mainly caused by carrier depopulation through stimulated electron-hole recombination, and by the loss of light travelling in the direction of the stripe.

Official source

https://infoscience.epfl.ch/entities/publication/2be43e4d-5518-490d-aad8-e1a6d9769424

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Jean-Louis Staehli
1993
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2be43e4d-5518-490d-aad8-e1a6d9769424

About this result

Related concepts (24)

Optical amplifier

An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics. They are used as optical repeaters in the long distance fiberoptic cables which carry much of the world's telecommunication links.

Optical parametric amplifier

An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. It is essentially the same as an optical parametric oscillator, but without the optical cavity (i.e., the light beams pass through the apparatus just once or twice, rather than many many times). Spontaneous parametric down conversion Optical parametric generation (OPG) (also called "optical parametric fluorescence", or "spontaneous parametric down conversion") often precedes optical parametric amplification.

Raman amplification

Raman amplification ˈrɑːmən is based on the stimulated Raman scattering (SRS) phenomenon, when a lower frequency 'signal' photon induces the inelastic scattering of a higher-frequency 'pump' photon in an optical medium in the nonlinear regime. As a result of this, another 'signal' photon is produced, with the surplus energy resonantly passed to the vibrational states of the medium. This process, as with other stimulated emission processes, allows all-optical amplification.

Related publications (9)

Photon and Carrier Density Profiles in a Semiconductor Optical Amplifier

Chat with Graph Search

Hyperparametric solitons in nondegenerate optical parametric oscillators

Coherent light emission and electrical tuning of WS2-WSe2 interlayer excitons

Wideband generation of pulses in dual-pump optical parametric amplifier: theory and experiment