Acousto-optic channelized spectrum analyzers

We report a high frequency resolution acouto-optic (AO) spectrum analyzer b ased on a semiconductor laser. The requirements for the semiconductor laser characteristics will be defined in order to achieve high frequency resolut ion of the spectrum analyzer. The performance of the compact AO spectrum an alyzer based on a semiconductor laser of wavelength 0.65 mu m and a TeO2 Br agg cell will be reported. This analyzer has a central frequency of 75 MHz and bandwidth 50 MHz, and was 1000 frequency channels.