Patent ID: 11901699
Assignee: SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS (SINANO) , CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A narrow linewidth laser, comprising a passive ring resonant cavity, an FP resonant cavity, and a first gain region, wherein the passive ring resonant cavity and the FP resonant cavity are combined to form an M-Z compound external cavity structure such that the FP resonant cavity has a U-shape that envelops a side of a ring structure of said passive ring resonant cavity, wherein the U-shape is disposed in a same plane as a ring shape of said ring structure; the M-Z compound external cavity structure is at least used for providing wavelength selection and narrowing a laser linewidth; and the first gain region is provided on an outer side of the M-Z compound external cavity structure and is at least used for providing a gain for the whole laser.