Patent ID: 11971307
Assignee: BEIJING RSLASEROPTO-ELECTRONICS TECHNOLOGY CO. LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for measuring a wavelength for a laser device, comprising:
a first optical path assembly configured to homogenize a laser beam emitted by the laser device; and
a second optical path assembly constituting a laser wavelength measurement optical path with the first optical path assembly, and configured to perform a hierarchical imaging on the laser beam homogenized by the first optical path assembly;
wherein the second optical path assembly comprises:
an FP etalon assembly comprising at least two FP etalons, the homogenized laser beam passing through the FP etalon assembly to generate an interference fringe; and
an optical classifier arranged after the FP etalon assembly in the laser wavelength measurement optical path, and configured to deflect the laser beam passing through the FP etalon assembly, so as to achieve the hierarchical imaging.