Measurements of laser temporal profile and polarization-dependent quantum efficiency

Author

Yan, Lixin ; Du, Yingchao ; Huang, Wenhui ; Tang, Chuanxiang ; Lin, Yuzheng ; Cheng, Jianping

Author_Institution

Tsinghua Univ., Beijing

fYear

2007

fDate

25-29 June 2007

Firstpage

1052

Lastpage

1054

Abstract

The ultrashort ultraviolet (UV) laser system and the optical transport line for driving the photocathode RF gun at Accelerator Laboratory of Tsinghua University are introduced in the article. Temporal profile of the UV pulse was measured by non-colinear difference frequency generation (DFG) between the UV pulse itself and the jitter-free residual IR laser pulse after third harmonic generation (THG) process. Experiments to measure the dependence of quantum efficiency (QE) on laser polarization state are also performed. Results show that in our case the ratio of QE between p- and s- polarization is more than 2.6.

Keywords

laser variables measurement; light polarisation; optical harmonic generation; photocathodes; solid lasers; Accelerator Laboratory of Tsinghua University; DFG; THG process; jitter-free residual IR laser pulse; laser polarization state; laser temporal profile measurements; noncolinear difference frequency generation; optical transport line; p-polarization; photocathode RF gun; quantum efficiency; s-polarization; third harmonic generation; ultrashort ultraviolet laser system; Cathodes; Frequency measurement; Laboratories; Nonlinear optics; Optical harmonic generation; Optical polarization; Optical pulse generation; Performance evaluation; Pulse measurements; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4440979

Filename

4440979