Laser stabilization apparatus and method using homodyne interferometer-type optical reference module
AssigneeKorea Advanced Institute of Science and Technology
InventorsJungwon KIM, Igju JEON
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Abstract
A laser stabilization apparatus comprises an optical reference module configured in a homodyne interferometer type, wherein the optical reference module is configured to: divide output light of a laser into a reference path and a delay path including a delay line; and output an interference signal generated by interference between two optical signals that have passed through the reference path and the delay path; and an optical detecting module configured to detect the interference signal and output an error signal including frequency noise information of the laser.
Claims15
A laser stabilization apparatus, comprising:
- an optical reference module configured in a homodyne interferometer type, the optical reference module being configured to divide output light of a laser into a reference path and a delay path including a delay line;
- and output an interference signal generated by interference between two optical signals that have passed through the reference path and the delay path;
- and
- an optical detecting module configured to detect the interference signal and output an error signal including frequency noise information of the laser.
A method for operating a laser stabilization apparatus, comprising:
- dividing output light of a laser into a reference path and a delay path including a delay line, and outputting an interference signal generated by interference between two optical signals that have passed through the reference path and the delay path by an optical reference module configured in a homodyne interferometer type;
- detecting the interference signal and outputting an error signal including frequency noise information of the laser, by an optical detecting module;
- and
- feeding the error signal back to a frequency modulator of the laser, by a servo system.
Dependencies are inferred from the claim text.