Influence of a holding beam on the direct modulation behavior of semiconductor lasers

Bart Moeyersoon; Geert Morthier

doi:10.1117/12.548750

1 September 2004 Influence of a holding beam on the direct modulation behavior of semiconductor lasers

Bart Moeyersoon, Geert Morthier

Proceedings Volume 5452, Semiconductor Lasers and Laser Dynamics; (2004) https://doi.org/10.1117/12.548750
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

In this paper we theoretically investigate the influence of the injection of a so-called holding beam - a CW beam at the transparency wavelength of the gain medium on the direct modulation properties of semiconductor lasers. Both the small-signal and the large-signal behaviour are investigated. The influence of the holding beam is studied using a simple rate equation model. From the solution of the rate equations it follows that the injection of the holding beam doesn't increase the modulation bandwidth or resonance frequency itself, but that it results in a significant increase of the damping of the relaxation oscillations. Furthermore, it is shown that the chirp (both the adiabatic and dynamic chirp) will be significantly reduced. A few numerical examples - calculated with our CLADISS software - are given to show that the modulation response at not too high bias levels can be significantly improved when a holding beam is applied. For direct, large signal modulation, the injection of a holding beam leads to significantly reduced transient effects and reduced chirping, even at low bias.

Citation Download Citation

Bart Moeyersoon and Geert Morthier "Influence of a holding beam on the direct modulation behavior of semiconductor lasers", Proc. SPIE 5452, Semiconductor Lasers and Laser Dynamics, (1 September 2004); https://doi.org/10.1117/12.548750

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available