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arXiv · 2308.02476

High-Power Quantum-Limited Photodiode and Classical Laser Noise Squashing

Vincent Dumont·Jiaxing Ma·Eamon Eagan·Jack C. Sankey
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Abstract

To benefit high-power interferometry and the creation of low-noise light sources, we develop a simple lead-compensated photodetector enabling quantum-limited readout from 0.3 mW to 10 mW and 10 k$\Omega$ transimpedance gain from 85 Hz - 35 MHz. Feeding the detector output back to an intensity modulator, we squash the classical amplitude noise of a commercial 1550 nm fiber laser to the shot noise limit over a bandwidth of 700 Hz - 200 kHz, observing no degradation to its (nominally ~100 Hz) linewidth.

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Vincent Dumont, Jiaxing Ma, Eamon Eagan, Jack C. Sankey. 2023-08-04. High-Power Quantum-Limited Photodiode and Classical Laser Noise Squashing. https://arxiv.org/abs/2308.02476

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