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Residual phase noise suppression for Pound-Drever-Hall cavity stabilization with an electro-optic modulator

TitleResidual phase noise suppression for Pound-Drever-Hall cavity stabilization with an electro-optic modulator
Publication TypeJournal Article
Year of Publication2018
AuthorsEndo, M, Schibli, TR
JournalOSA Continuum
Volume1
Issue1
Pagination116-123
Date Published2018-09
Abstract

We propose a simple method to suppress residual frequency/phase noise in PoundDrever-Hall (PDH) cavity stabilization setups. This method makes use of the electro-optic modulator that is commonly used in PDH setups, and hence, only requires the addition of a simple electronic feedback circuit. Here, we apply this method to stabilize a commercially available continuous wave (cw) laser to a high-finesse cavity, and we demonstrate additional phase noise suppression of ~30 dB and more from DC to 100 kHz, compared to the use of a fast-piezo actuator alone. This method can be applied to almost all PDH systems to achieve feedback bandwidths in the multi-MHz range. Furthermore, this method does not require additional actuators, such as acousto-optic modulators, and it does not introduce parasitic amplitude modulation to the first order. The limitations and drawbacks of this approach are also discussed. 

URLhttps://www.osapublishing.org/DirectPDFAccess/2038A4BA-B56B-08A1-36F38AE0D83617E7_398177/osac-1-1-116.pdf?da=1&id=398177&seq=0&mobile=no
DOI10.1364/OSAC.1.000116

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