Cart (Loading....) | Create Account
Close category search window

A note on the semiconductor laser equivalent circuit

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Flynn, E.J. ; Lucent Technologies, Murray Hill, New Jersey 07974

Your organization might have access to this article on the publisher's site. To check, click on this link: 

The small-signal rate equations for a semiconductor laser can be represented as a network of electrical components, as shown by Tucker and Kaminow [R. S. Tucker and I. P. Kaminow, J. Lightwave Technol. LT-2, 385 (1984)] for the case of finite gain compression Є≫0. However, a calculation of small-signal response curves δS/δI vs I derived from this equivalent circuit exhibit a linear decrease (“droop”) above threshold that is inconsistent with the dc solutions of the original rate equations. This problem flags a subtle flaw in the formulation of the circuit model. We observe, moreover, that the expression for the resonance damping parameter used throughout the laser literature follows exactly from this same RLC circuit model. The derivation of the circuit model from the rate equations is revisited. Consistency between the dc and ac solutions is achieved when the differential of the net gain δ{G/(1+ЄS)} is appropriately represented as a shunt element with zero admittance. The corrected circuit model resolves the “droop” problem in the small-signal δS/δI vs I relation. As expected, the new circuit model leads to a modified expression for the damping parameter. © 1999 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:85 ,  Issue: 4 )

Date of Publication:

Feb 1999

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.