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Quantum Dot Lasers$
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Victor M. Ustinov, Alexey E. Zhukov, Anton Yu. Egorov, and Nikolai A. Maleev

Print publication date: 2003

Print ISBN-13: 9780198526797

Published to Oxford Scholarship Online: January 2010

DOI: 10.1093/acprof:oso/9780198526797.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 17 November 2019

Conclusions

Conclusions

Chapter:
(p.264) Conclusions
Source:
Quantum Dot Lasers
Author(s):

Victor M. Ustinov

Alexey E. Zhukov

Anton Yu. Egorov

Nikolai A. Maleev

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198526797.003.0009

This chapter presents some concluding remarks. Remarkable progress in the development of self-organized quantum dot lasers is pointed out and the most notable results, e.g. a record-low threshold current density, are briefly summarized. The main parameters of QD arrays affecting the laser’s threshold characteristics are emphasized. It is recognized that device performance of existing QD lasers is still inferior when compared with the theoretical predictions for the ideal quantum dots. Inhomogeneous broadening associated with the size non-uniformity of the islands is the main problem that still remains. An expectation of bright prospects is expressed for device application of quantum dots emitting in wavelength ranges beyond the spectral limit of a quantum well.

Keywords:   quantum dot lasers, self-organized quantum dots, threshold current, inhomogeneous broadening

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