Patent ID: 11916354
Assignee: TECHNISCHE UNIVERSITäT WIEN
Field: Measurement (Instruments)
Classification: CPC H  G | IPC H

Claim 10:
11. A laser assembly comprising:
a semiconductor laser with a standing wave cavity and a fast gain medium, wherein a gain relaxation time of the gain medium is smaller than the round-trip time in the standing wave cavity;
a DC source coupled to the standing wave cavity for pumping the laser;
an AC injection device for injecting an electrical AC signal into the standing wave cavity to stabilize an optical frequency comb, the AC injection device being suitable for producing an electrical AC signal within a range and/or within an integer multiple of the range, wherein the range is within ±1% of a natural round-trip frequency in the standing wave cavity;
at least a first and a second electric contact section extending along a first longitudinal side of a longitudinal extension of the standing wave cavity, wherein the AC injection device is coupled to the first and/or to the second electric contact section such that a complex amplitude of the injected electrical AC signal differs for the first and the second longitudinal electric contact section; and wherein:
the AC injection device is coupled to the first and/or the second electric contact section such that an absolute value of the complex amplitude of the injected electrical AC signal differs for the first and the second electric contact section by at least 50%, with respect to the higher absolute value of the complex amplitude; or
the AC injection device is coupled to the first and/or the second electric contact section such that a phase of the injected electrical AC signal differs for the first and the second electric contact section by substantially 180°.