Ni Yucai, Yan Hanmei, Ma Mingde, Lin Jian. Synthesis of He-Ne laser frequency at 88 THz[J]. Chinese Journal of Lasers, 1985, 12(1): 29
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The beat signals of the harmonic mixing between He-Ne laser at 3.39μm, CO2 laser and microwave radiation of the klystron has been observed by using a W-Ni point contact MIM diodeu as the harmonic generator and mixer. The signal to noise ratio obtained was 22 dB at the bandwidth of 50 kHz.