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YuhangZhao - 22:43, Thursday 11 April 2019 (1290)Get code to link to this report
Comment to The comparision between old and new servo on homodyne noise spectrum with only LO (Click here to view original report: 1286)

After connecting the power of homodyne and spectrum analyzer(this can remove the ground loop noise), I measured noise spectrum of homodyne again. During this measurement, there is only an infrared beam incident and has a power value of 1.3mW.

The result is shown in the attached figure.

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1290_20190411154444_figure1.png