Chinese Optics Letters, 2016, 14 (10): 101401, Published Online: Aug. 2, 2018
Study on the sensitivity of optical cavity length to light power fluctuation Download: 929次
Abstract
The length stability of optical cavities is vital in ultra-stable, cavity-stabilized laser systems. Using finite element analysis, we study the length deviation of optical cavities due to thermal expansion and thermo-refractive effects when the incident light power is changed. The simulated fractional length sensitivity of a 7.75-cm-long football cavity to the power fluctuation of incident light is 5 × 10 14 / μW , which is in agreement with the experimental results found by measuring the frequency change of a cavity-stabilized laser when the incident light power is changed. Based on the simulation, the cavity sensitivity to light power fluctuation is found to depend on the cavity size and material.
Wen Qi, Yanyi Jiang, Xueyan Li, Li Jin, Zhiyi Bi, Longsheng Ma. Study on the sensitivity of optical cavity length to light power fluctuation[J]. Chinese Optics Letters, 2016, 14(10): 101401.