Modified Pockels sensor for electric-field measurements

Author

Murooka, Y. ; Nakano, T. ; Takahashi, Y. ; Kawakami, T.

Author_Institution

Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan

Volume

141

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

481

Lastpage

485

Abstract

Both sensitivity and resolution of a Pockels field measuring system have been much improved by using a light-intensity-difference method with a modulated laser beam. Experimental results show an increase in sensitivity of over 200 times from that of the original field measuring system, and resolution, a ratio of signal to noise (S/N), is improved by more than 30 dB at an applied field strength of 200 V/cm. The minimum measurable field strength is 5.0 V/cm of AC field strength at the S/N ratio of 10.2 dB and 1.0 V/cm at the critical value of 0 dB, where the signal voltage equals the noise. Furthermore, it is found that by introducing a reflection-mirror technique, the field measuring system can be further simplified

Keywords

Pockels effect; electric field measurement; electro-optical devices; high-voltage techniques; 0 dB; 10.2 dB; 30 dB; AC field strength; Pockels field measuring system; Pockels sensor; UHV; electric-field measurements; field strength; light-intensity-difference method; minimum measurable field strength; modulated laser beam; reflection-mirror technique; resolution; sensitivity; signal to noise ratio; signal voltage;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:19941445

Filename

331579