Observation of field-induced optical phonon amplification in semiconductor nanostructures

W. Liang; Kong-Thon F. Tsen; Otto F. Sankey; Sergiy Mikhailovich Komirenko; Ki Wook Kim; Viatcheslav A. Kochelap; Meng-Chyi Wu; Chong-Long Ho; Wen-Jeng Ho; Hadis Morkoc

doi:10.1117/12.479278

30 May 2003 Observation of field-induced optical phonon amplification in semiconductor nanostructures

W. Liang, Kong-Thon F. Tsen, Otto F. Sankey, Sergiy Mikhailovich Komirenko, Ki Wook Kim, Viatcheslav A. Kochelap, Meng-Chyi Wu, Chong-Long Ho, Wen-Jeng Ho, Hadis Morkoc

Author Affiliations +

Proceedings Volume 4992, Ultrafast Phenomena in Semiconductors VII; (2003) https://doi.org/10.1117/12.479278
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

We have experimentally proven the Cerenkov generation of optical phonons by drifting electrons in a semiconductor. We observe an instability of the polar optical phonons in nanoscale semiconductors that occurs when electrons are accelerated to very high velocities by intense electric fields. The instability is observed when the electron drift velocity is larger than the phase velocity of optical phonons and rather resembles a “sonic-boom” for optical phonons. The effect is demonstrated in p-i-n semiconductor nanostructures by suing subpicosecond Raman spectroscopy. We suggest that the observed phenomena will have enormous impact on the carrier dynamics in nanoscale semiconductor devices.

Citation Download Citation

W. Liang, Kong-Thon F. Tsen, Otto F. Sankey, Sergiy Mikhailovich Komirenko, Ki Wook Kim, Viatcheslav A. Kochelap, Meng-Chyi Wu, Chong-Long Ho, Wen-Jeng Ho, and Hadis Morkoc "Observation of field-induced optical phonon amplification in semiconductor nanostructures", Proc. SPIE 4992, Ultrafast Phenomena in Semiconductors VII, (30 May 2003); https://doi.org/10.1117/12.479278

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