INTERFEROMETRIC SCANNING ACOUSTOOPTIC SPECTRUM ANALYZER

被引：1
|
作者：
JAKAB, L
RICHTER, P
机构：
[1] Technical University of Budapest, Institute of Physics, Department of Atomic Physics, Budapest
来源：
APPLIED OPTICS | 1991年 / 30卷 / 10期
关键词：
D O I：
10.1364/AO.30.001206
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An interferometric scanning acoustooptic (AO) spectrum analyzer is described. The instantaneous detector array is replaced by an AO Bragg cell driven by a short rf pulse and a single fast photodetector, and the diffracted beam is mixed with a local oscillator. The temporal modulation of the heterodyne signal gives the spectrum of the input signal with linear characteristics. Using this architecture, a dynamic range of 70 dB can be achieved with a large time-bandwidth product (1000) and high speed (50-mu-s/spectrum).
引用
收藏
页码：1206 / 1209
页数：4
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