LIGO Document T1500040-v2

Homodyne Photodetector Design

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T - Technical notes
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Design description of the homodyne photodetector developed for quantum noise experiments.

Some comments on design at 3.1 MHz:

A means of using the 3.1MHz design:

Note that this design is not compatible with the footprint of new Laser Components high QE diodes. It also requires some modifications for a lower 3.1MHz CLF frequency.

This are addressed in the new aligo homodyne circuit E1700135

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homodyne electronics
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