Journal
OPTICS LETTERS
Volume 46, Issue 3, Pages 645-648Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.405299
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- National Institute of Standards and Technology [70NANB17H247]
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Electro-optic frequency combs were used to rapidly interrogate an optomechanical sensor, achieving spectral resolution substantially higher than mode-locked frequency combs, suitable for a wide range of optomechanical sensors.
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. (C) 2021 Optical Society of America
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