Jump to ContentJump to Main Navigation
Quantum Confined Laser DevicesOptical gain and recombination in semiconductors$
Users without a subscription are not able to see the full content.

Peter Blood

Print publication date: 2015

Print ISBN-13: 9780199644513

Published to Oxford Scholarship Online: November 2015

DOI: 10.1093/acprof:oso/9780199644513.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 24 March 2019

Gain and emission in quantum dots

Gain and emission in quantum dots

(p.135) 9 Gain and emission in quantum dots
Quantum Confined Laser Devices

Peter Blood

Oxford University Press

The absorption, gain, and spontaneous emission spectra due to optical transitions in a layer of quantum dots in the slab waveguide of a laser are derived in terms of the dipole matrix element and optical cross section of the dots. This leads to the relation between peak modal gain and intrinsic spontaneous recombination current that is at the heart of device design. Injection lasers use self-assembled dots and so an inhomogeneous distribution of dot sizes, and therefore confined state energies, is a fact of life: this inhomogeneous broadening influences the shape of the spectra. The electron occupation of the states in each dot is determined by capture and emission of carriers injected into the wetting layer. The use of thermal distributions specified by Fermi functions and random population of dots are considered.

Keywords:   optical transition, inhomogeneous distribution, absorption, spontaneous emission, modal gain, thermal distribution, random population, charge neutrality

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .