Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Variation of spectral response from cesium-covered GaAs and band features contained within the spectral response

Not Accessible

Your library or personal account may give you access

Abstract

The spectral response and band features of cesium-covered GaAs have been investigated by using a spectral-response measuring instrument at room temperature. We find that the shape of the spectral- response curves is almost identical if the vacuum level is greater than the energy level of the conduction band minimum; otherwise, the shape changes with time. The preservation or change in the shape is attributed to the evolution of a surface barrier. By calculation of the derivatives of the spectral response, the band features of GaAs can be determined. We find six peaks in the spectral-response derivatives. These peaks are in excellent agreement with the photon energy positions determined by the transitions from different valence band peaks to different conduction band valleys.

© 2010 Optical Society of America

Full Article  |  PDF Article
More Like This
Variation of spectral response for exponential-doped transmission-mode GaAs photocathodes in the preparation process

Yijun Zhang, Jun Niu, Jijun Zou, Benkang Chang, and Yajuan Xiong
Appl. Opt. 49(20) 3935-3940 (2010)

Energy distributions of electrons emitted from reflection-mode Cs-covered GaAs photocathodes

Jijun Zou, Yijun Zhang, Xincun Peng, Wenjuan Deng, Lin Feng, and Benkang Chang
Appl. Opt. 51(31) 7662-7667 (2012)

Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode

Xinlong Chen, Muchun Jin, Yugang Zeng, Guanghui Hao, Yijun Zhang, Benkang Chang, Feng Shi, and Hongchang Cheng
Appl. Opt. 53(32) 7709-7715 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved