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US 11,901,699 B2Granted
Narrow linewidth laser
AssigneeSuzhou Institute of Nano-Tech and Nano-Bionics (Sinano) , Chinese Academy of Sciences
InventorRuiying Zhang
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AssigneeSuzhou Institute of Nano-Tech and Nano-Bionics (Sinano) , Chinese Academy of Sciences
InventorRuiying Zhang
Estimating the term…
A narrow linewidth laser includes a passive ring resonant cavity, an FP resonant cavity, and a first gain region. The passive ring resonant cavity and the FP resonant cavity are combined to form an M-Z (Mach-Zehnder interference structure) compound external cavity structure, and the M-Z compound external cavity structure is at least used for providing wavelength selection and narrowing laser linewidth. The first gain region is provided on the outer side of the M-Z compound external cavity structure and is used for providing a gain for the whole laser. The narrow linewidth laser is simple in structure, high in side-mode suppression ratio, narrow in linewidth, and high in output power. By further integrating a PN junction region or MOS junction region, broadband and rapid tuning with low power consumption can also be achieved, and tuning management is simple.
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;
Dependencies are inferred from the claim text.