3 papers
physics.optics2026
Laser stabilized to a room temperature cavity with AlGaAs coatings reaching fractional frequency instability
Chun Yu Ma, Jialiang Yu, Steffen Sauer +6
We present a laser system referenced to a room-temperature ultrastable cavity employing crystalline AlGaAs coatings. We demonstrate a fractional frequency instability of $4.2 \time…
physics.optics2026
Photo-birefringent effects in crystalline AlGaAs mirror coatings
Chun Yu Ma, Jialiang Yu, Thomas Legero +5
High-reflective crystalline coatings show reduced Brownian noise compared to conventional dielectric coatings. However, several ultra stable laser syste…
physics.optics2024
Ultrastable lasers: investigations of crystalline mirrors and closed cycle cooling at 124 K
C. Y. Ma, J. Yu, T. Legero +8
We have investigated crystalline AlGaAs/GaAs optical coatings with three ultra-stable cavities operating at 4 K, 16 K, 124 K and 297 K. The response of the resonance frequencies of…