Physical Review A
We present detailed considerations on the achievable sensitivity in the measurement of birefringence using a high finesse optical cavity, emphasizing techniques based on frequency metrology. Alternative approaches of laser locking and cavity measurement techniques are discussed and demonstrated. High-precision measurements of the cavity mirror birefringence have led to the interesting observations of photorefractive activities on mirror surfaces.
Hall, John L.; Ye, Jun; and Ma, Long-Sheng, "Measurement of Mirror Birefringence at the Sub-Ppm Level: Proposed Application to a Test of QED" (2000). Physics Faculty Contributions. 88.