Low Temperature Techniques

OpticaL Cavity Physics

Mitigating Thermal and Vibrational Noise

Many researchers employ low temperatures in their optical cavity experiments to reduce phonon broadening and enable material observations inaccessible at room temperature. For researchers studying optical cavities, there are experimental considerations that extend beyond simply achieving cryogenic temperatures. Factors such as temperature stability, ultra-low vibrations and accelerations, and the demands of sustaining a cryogenic environment for days, weeks, or even months deserve heightened importance when working at low temperatures. We consider two experiments which were configured to perform cavity physics at cryogenic temperatures, and we also discuss recent advances in closed-cycle technology which will reduce the barrier to entry of performing low temperature optical cavity experiments.

About the Author

Craig Wall earned a Ph.D. in physical chemistry from the University of North Carolina at Chapel Hill. He was a Beckman Institute postdoctoral researcher at the University of Illinois at Urbana-Champaign. Craig has 25 years of microscopy & scientific instrument development experience, working for several years in industry in the fields of Scanning Probe Microscopes, Nanoindentation, Nanomechanical testing equipment, and benchtop Field Emission Scanning Electron Microscopes. Craig joined Montana Instruments in 2017 as an Application Scientist.

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