HETERODYNE CO2-LASER INTERFEROMETER WITH DIRECT PHASE READOUT

被引：10

作者：

HUGENHOLTZ, CAJ

MEDDENS, BJH

机构：

[1] Association Euratom-FOM, FOM-Instituut Voor Plasmafysica, Rijnhuizen, Nieuwegein

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1979年 / 50卷 / 09期

关键词：

D O I：

10.1063/1.1135997

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A CO2-laser interferometer with heterodyne detection has been built to measure electron line densities of plasmas in the range of 10 18 to 5×1022 m-2. Heterodyne operation is accomplished by using two counteracting acousto-optic modulators at a difference frequency of 500 kHz. A digital phase comparator is used to obtain direct read-out of the phase shift. The time resolution is 3.5 μs.

引用

页码：1123 / 1124

页数：2