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arXiv · 1607.01816

Broadband low-noise photodetector for Pound-Drever-Hall laser stabilization

Shreyas Potnis·Amar C. Vutha
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Abstract

The Pound-Drever-Hall laser stabilization technique requires a fast, low-noise photodetector. We present a simple photodetector design that uses a transformer as an intermediary between a photodiode and cascaded low-noise radio-frequency amplifiers. Our implementation using a silicon photodiode yields a detector with 50 MHz bandwidth, gain $> 10^5$ V/A, and input current noise $< 4$ pA/$\sqrt{\mathrm{Hz}}$, allowing us to obtain shot-noise-limited performance with low optical power.

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Shreyas Potnis, Amar C. Vutha. 2016-07-06. Broadband low-noise photodetector for Pound-Drever-Hall laser stabilization. https://doi.org/10.1063/1.4960088

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