Small-signal parameters of quantum dash lasers with multiple coupled energy states

Omar Qasaimeh

doi:10.1117/1.3509369

1 November 2010 Small-signal parameters of quantum dash lasers with multiple coupled energy states

Omar Qasaimeh

Author Affiliations +

Optical Engineering, Vol. 49, Issue 11, 114202 (November 2010). https://doi.org/10.1117/1.3509369

Abstract

The small-signal parameters of quantum dash (QDash) lasers with multiple coupled energy states have been derived using a rate equation model. Analytical expressions for the small-signal differential gain, resonance frequency, and recombination lifetime have been derived. The linewidth enhancement factor of QDash lasers with multiple coupled energy states is studied using our derived model. With the help of our model, we find that introducing p-type doping in the active region of the QDash layer does not enhance the small-signal resonant frequency, but reduces the small-signal recombination lifetime and the linewidth enhancement factor. Also, we find that increasing the n-type doping concentration decreases slightly the small-signal recombination lifetime and the resonant frequency, and increases slightly the linewidth enhancement factor. Our analysis reveals that an undoped QDash laser can be designed to operate at the second excited state energy and to yield high modulation bandwidth and low linewidth enhancement factor.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Omar Qasaimeh "Small-signal parameters of quantum dash lasers with multiple coupled energy states," Optical Engineering 49(11), 114202 (1 November 2010). https://doi.org/10.1117/1.3509369

Published: 1 November 2010

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