Publication

InAsP quantum wells for low threshold and high efficiency multi-quantum well laser diodes emitting at 1.55 mu m

Jean-François Carlin
1997
Conference Papers

Abstract

We report the first successful use, to our knowledge, of InAsP quantum wells for 1.55 mu m wavelength laser emission: 5 quantum well InAsP/InGaAsP horizontal cavity lasers showed 88% internal efficiency, 1.6 cm(-1) losses per well, and 33 A/cm(2) transparency current density per well, which equal or even surpass the best published characteristics for 1.55 mu m wavelength lasers based on any material system. Strain relaxation issues do not severely limit the multi-quantum-well design since up to 17 quantum wells were integrated in a strain-balanced laser which showed equally good characteristics.

Official source

https://infoscience.epfl.ch/entities/publication/7599b2b4-3d83-49d7-9c3c-7cf5f1b1474b

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-François Carlin
1997
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7599b2b4-3d83-49d7-9c3c-7cf5f1b1474b

About this result

Related concepts (32)

Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation. The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light that is coherent.

Quantum well

A quantum well is a potential well with only discrete energy values. The classic model used to demonstrate a quantum well is to confine particles, which were initially free to move in three dimensions, to two dimensions, by forcing them to occupy a planar region. The effects of quantum confinement take place when the quantum well thickness becomes comparable to the de Broglie wavelength of the carriers (generally electrons and holes), leading to energy levels called "energy subbands", i.e.

Laser diode

A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction. Driven by voltage, the doped p–n-transition allows for recombination of an electron with a hole. Due to the drop of the electron from a higher energy level to a lower one, radiation, in the form of an emitted photon is generated. This is spontaneous emission.

Related publications (28)

InAsP quantum wells for low threshold and high efficiency multi-quantum well laser diodes emitting at 1.55 mu m

Chat with Graph Search

Low-rank optimal control of quantum devices

Solar thermophotovoltaic device

Probing mixed-state phases on a quantum computer via Renyi correlators and variational decoding