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Electro-optic frequency combs for rapid interrogation in cavity optomechanics



David Long, Benjamin J. Reschovsky, Feng Zhou, Yiliang Bao, Thomas W. LeBrun, Jason Gorman


Electro-optic frequency combs were employed to rapidly interrogate an optomechanical sensor, demonstrating spectral resolution substantially exceeding that possible with a mode-locked frequency comb. Frequency combs were generated using an integrated-circuit-based direct digital synthesizer and utilized in a self-heterodyne configuration. Unlike approaches based upon laser locking, the present approach allows rapid, parallel measurements of full optical cavity modes, large dynamic range of sensor displacement, and acquisition across a wide frequency range between DC and 500 kHz. In addition to being well suited to measurements of acceleration, this optical frequency comb-based approach can be utilized for interrogation in a wide range of cavity optomechanical sensors.
Optics Letters


Frequency combs, electro-optics, instrumentation, sensors, optical cavity, accelerometry


Long, D. , Reschovsky, B. , Zhou, F. , Bao, Y. , LeBrun, T. and Gorman, J. (2021), Electro-optic frequency combs for rapid interrogation in cavity optomechanics, Optics Letters, [online], (Accessed June 22, 2024)


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Created January 28, 2021, Updated March 1, 2021