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A microrod optical-frequency reference in the ambient environment



Wei Zhang, Frederick N. Baynes, Scott Diddams, Scott Papp


We present an ultrahigh-Q microrod resonator operated under ambient conditions that supports laser fractional frequency stabilization to the thermal-noise limit of 3 x 10−13 and a linewidth of 62 Hz. We characterize the technical-noise mechanisms for laser stabilization, which contribute significantly less than thermal noise. With all-fiber-integrated photonics, we generate optical and microwave reference signals provided by the microrod modes and the free- spectral range, respectively. Our results suggest the future physical considerations for a miniature, low noise, and robust optical-frequency source.
Physical Review Letters


Laser stabilization, Microresonator, Optical-frequency reference


Zhang, W. , Baynes, F. , Diddams, S. and Papp, S. (2019), A microrod optical-frequency reference in the ambient environment, Physical Review Letters (Accessed November 30, 2023)
Created August 6, 2019, Updated April 27, 2023