Phonon and polaron enhanced IR-THz photodetectors

H. C. Liu; C. Y. Song; Z. R. Wasilewski; M. Buchanan

doi:10.1117/12.874098

24 January 2011 Phonon and polaron enhanced IR-THz photodetectors

H. C. Liu, C. Y. Song, Z. R. Wasilewski, M. Buchanan

Proceedings Volume 7945, Quantum Sensing and Nanophotonic Devices VIII; 79450X (2011) https://doi.org/10.1117/12.874098
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Thanks to the modern compound semiconductor growth and processing technologies, quantum wells and related semiconductor nanostructures have been widely investigated for infrared-terahertz devices. Here we propose a new general approach to make use of polar optical phonons in quantum wells for infrared (IR) and terahertz (THz) detection. Polar optical phonons strongly couple with both electrons and photons, and hence are potentially useful for photonic devices. As the first example, we show the coupling of phonon and intersubband transition leading to Fano resonance in photocurrent spectra. We investigate the phenomenon experimentally in specially designed GaAs/AlGaAs quantum well infrared photodetectors. Finally, we discuss the future research and potentials. Strongly coupled systems of electrons and phonons, i.e., polarons, may lead to new IR-THz photodetectors.

Citation Download Citation

H. C. Liu, C. Y. Song, Z. R. Wasilewski, and M. Buchanan "Phonon and polaron enhanced IR-THz photodetectors", Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79450X (24 January 2011); https://doi.org/10.1117/12.874098

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