Can coupling with remote conduction bands cause a sufficient normal-incidence absorption in n-type direct-gap semiconductor quantum wells?

Rui Q. Yang

doi:10.1117/12.271186

15 April 1997 Can coupling with remote conduction bands cause a sufficient normal-incidence absorption in n-type direct-gap semiconductor quantum wells?

Rui Q. Yang

Author Affiliations +

Proceedings Volume 2999, Photodetectors: Materials and Devices II; (1997) https://doi.org/10.1117/12.271186
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

Surprisingly, several experiments have reported that normal- incidence light absorption due to inter-conduction-subband transitions in direct-gap semiconductor quantum wells is a s strong as in-plane-incidence absorption.In contrast to other models, a recent theoretical study claimed that a 14-band k.p model including multiband coupling terms due to remote- conduction bands is able to explain the experimental results. In the percent work, a concise formulation extends the model beyond 14 bands. Nevertheless, after re-deriving the optical transition matrix elements, this analysis clearly shows that the oscillator strength for the in-plane polarized optical intersubband transition due to the multiband coupling effects is much smaller than the oscillator strength for the normal-to-plane polarized optical intersubband transition. These results indicate that the multiband coupling effects due to remote-conduction bands cannot cause a sufficient in-plane polarized optical intersubband transition to produce the observed normal- incidence absorption in the desirable n-type III-V compound semiconductor quantum wells.

Citation Download Citation

Rui Q. Yang "Can coupling with remote conduction bands cause a sufficient normal-incidence absorption in n-type direct-gap semiconductor quantum wells?", Proc. SPIE 2999, Photodetectors: Materials and Devices II, (15 April 1997); https://doi.org/10.1117/12.271186

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