Lifetime of photo-excited carriers in GaAs studied with optical-pump terahertz-probe method

Lei Hou; Lei Yang; Xianjin Shao; Zhiquan Wang; Mengmeng Zhao; Wei Shi

doi:10.1117/12.2210956

5 November 2015 Lifetime of photo-excited carriers in GaAs studied with optical-pump terahertz-probe method

Lei Hou, Lei Yang, Xianjin Shao, Zhiquan Wang, Mengmeng Zhao, Wei Shi

Proceedings Volume 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015; 979538 (2015) https://doi.org/10.1117/12.2210956
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held June-July 2015, 2015, Hefei, Suzhou, and Harbin, China

Abstract

The ultrafast photoconductive characteristics of GaAs were investigated by the optical-pump terahertz-probe (OPTP) method at room temperature. In our experiment, a significant decrease of the terahertz transmittance has been observed when the time delay between the optical pump pulse and the terahertz probe pulse was adjusted. When the optical excitation occurred on the surface of GaAs, the free carriers increase. Results regressed the experimental curve and obtained the carrier lifetime is 681ps.

Citation Download Citation

Lei Hou, Lei Yang, Xianjin Shao, Zhiquan Wang, Mengmeng Zhao, and Wei Shi "Lifetime of photo-excited carriers in GaAs studied with optical-pump terahertz-probe method", Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 979538 (5 November 2015); https://doi.org/10.1117/12.2210956

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