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4 March 2022 Piezo-tuned nonplanar ring oscillator with GHz range and 100 kHz bandwidth
Thomas J. Kane, Kenji Numata, Anthony Yu, Julia Majors, David R. Demmer
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Proceedings Volume 11980, Solid State Lasers XXXI: Technology and Devices; 1198008 (2022) https://doi.org/10.1117/12.2610410
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
We demonstrated a monolithic nonplanar ring oscillator (NPRO) with a piezo-electric tuning range of 3.5 GHz with 192 volts applied, corresponding to a tuning coefficient of 18.2 MHz/volt. Useful bandwidth was limited by a resonance at 338 kHz and an anti-resonance at 420 kHz. This performance was achieved by making the NPRO small, with a small distance between the piezo-electric transducer and the laser beam, and by using a piezo-electric material with favorable properties. This large frequency modulation range and wide frequency modulation bandwidth, combined with unsurpassed coherence and high power, make this an attractive laser for frequency-modulated continuous-wave (FMCW) LIDAR. The tested laser provides over 500 mW at 1064 nm. Comparable performance will be possible at the eye-safe Nd:YAG wavelength of 1319 nm.
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Thomas J. Kane, Kenji Numata, Anthony Yu, Julia Majors, and David R. Demmer "Piezo-tuned nonplanar ring oscillator with GHz range and 100 kHz bandwidth", Proc. SPIE 11980, Solid State Lasers XXXI: Technology and Devices, 1198008 (4 March 2022); https://doi.org/10.1117/12.2610410
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KEYWORDS
YAG lasers
Lasers
Oscillators
LIDAR
Resonators
Nd:YAG lasers
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