Carrier and phonon dynamics in GaInNAs

Fajun Ma

doi:10.1117/12.888156

18 February 2011 Carrier and phonon dynamics in GaInNAs

Fajun Ma

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799507 (2011) https://doi.org/10.1117/12.888156
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

Degenerate pump-probe experiments have been performed on the dynamics of carrier and phonon in GaInNAs thin films. The time-resolved differential transmission shows a negative value, indicating photoinduced absorption from the trap states. After the negative minimum the differential transmission recovers to zero with a long time constant. Rate equation has been employed to simulate the carrier dynamics. The calculations fit the experimental differential transmission very well. The extracted time constants show that the carriers in the trap states of GaInNAs decay to equilibrium with a single time constant of 1.2 ns. An obvious modulation of the transmission signal has been observed superimposing on the photoinduced absorption. Such a modulation is found at a low frequency of 380 GHz by Fourier transform. This low frequency oscillation might be attributed to coherent longitudinal acoustic (LA) phonon.

Citation Download Citation

Fajun Ma "Carrier and phonon dynamics in GaInNAs", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799507 (18 February 2011); https://doi.org/10.1117/12.888156

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