Title :
Suppression of piezoelectric vibration on Pockels crystal
Author :
Matsumoto, Hirokazu ; Matsuoka, Shigeyasu ; Kumada, Akiko ; Hidaka, Kunihiko
Author_Institution :
Dept. of Electr. Eng., Univ. of Tokyo, Tokyo, Japan
Abstract :
In measurements of impulse voltages by a Pockels sensor, oscillatory components have been observed in the tail part of optical signals of Pockels sensor. In this paper, oscillatory components of Bi4Ge3O12 (BGO) Pockels crystals in various shapes are investigated. The tested BGO crystals are rectangular solids, a cylinder solid and tapered quadratic solid. The oscillatory components are derived from light output and frequency analysis is done. The frequency of oscillation on the rectangular crystals is lower than theoretical value and that of cylinder solid is the same with that of circumscribed rectangular solid. In the case of the tapered BGO crystal, it is possible to reduce oscillatory component by distributing piezoelectric vibration in broad frequency bandwidth.
Keywords :
Pockels effect; bismuth compounds; piezoelectric materials; sensors; vibrations; Bi4Ge3O12; Pockels crystal; Pockels sensor; cylinder solid; frequency analysis; impulse voltages; light output; oscillatory components; piezoelectric vibration suppression; tapered quadratic solid; Bismuth; Crystals; Frequency; Optical devices; Optical sensors; Shape; Solids; Tail; Testing; Voltage-controlled oscillators; Electrooptic measurements; High-voltage techniques; Photoelasticity; Piezooptic effects; Pockels effect;
Conference_Titel :
Transmission & Distribution Conference & Exposition: Asia and Pacific, 2009
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-5230-9
Electronic_ISBN :
978-1-4244-5230-9
DOI :
10.1109/TD-ASIA.2009.5356891
