Theory for intersubband absorption in quantum dots

Erik H. Hoffman; Shun-Lien Chuang

doi:10.1117/12.537982

18 June 2004 Theory for intersubband absorption in quantum dots

Erik H. Hoffman, Shun-Lien Chuang

Proceedings Volume 5349, Physics and Simulation of Optoelectronic Devices XII; (2004) https://doi.org/10.1117/12.537982
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

Quantum-dot infrared photodetectors (QDIPs) have been researched intensively because normal incidence absorption of the quantum dot layer is possible, unlike quantum-well infrared photodetectors (QWIPs) which require a grating coupled structure or an off-normal incidence configuration to satisfy the polarization selection rules. In this paper, we present a theoretical model for the band structure of a strained quantum dot, modeled as a quantum disk, and the intersubband absorption. We first present analytical expressions for the polarization-dependent optical dipole moments and then calculate the absorption spectra for various carrier densities and temperatures. The effects of carrier density, temperature, and inhomogeneous broadening will be discussed.

Citation Download Citation

Erik H. Hoffman and Shun-Lien Chuang "Theory for intersubband absorption in quantum dots", Proc. SPIE 5349, Physics and Simulation of Optoelectronic Devices XII, (18 June 2004); https://doi.org/10.1117/12.537982

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