Patent ID: 9231364
Filing Date: 2016-01-05
CPC Classification: H01S

Claim Text:
1. A laser apparatus, comprising: a laser light generator configured to emit laser light, and further configured to adjust a frequency of the laser light; a laser light detector configured to bombard an iodine cell with the laser light, photoelectrically convert the laser light that has passed through the iodine cell, and then to output a first light output signal; a differential signal generator configured to generate a differential signal of the first light output signal; a frequency locker configured to control the laser light generator to change the frequency of the laser light within a predetermined range, the frequency locker additionally configured to detect an amplitude corresponding to a saturated absorption line occurring in the differential signal, and further configured to stabilize the frequency of the laser light to a predetermined value; and an error detector configured to output a first error signal when the amplitude corresponding to the saturated absorption line occurring in the differential signal is greater than a predetermined value.