Evaluation method of laser frequency measuring device using optical frequency comb device

摘要

PROBLEM TO BE SOLVED: To more simply evaluate a laser frequency measurement device using an optical frequency COMB.SOLUTION: Upon evaluating system accuracy Eof a laser frequency measurement device using an optical frequency COMB device, an evaluation method of a laser frequency measurement device is configured to: apply phase synchronization to a reference frequency oscillator of an optical frequency COMB device in which a calibration value Eis obtained with uncertainty U; measure a beat frequency between the optical frequency COMB device and an optical frequency COMB evaluation laser of stability Eto obtain relative stability M; and use at least the Uand Mto estimate system accuracy of the laser frequency measurement device or uncertainty (reliability) Eof a laser frequency measurement result, using the optical frequency COMB device.SELECTED DRAWING: Figure 3