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Opt Lett. 2009 Nov 15;34(22):3493-5. doi: 10.1364/OL.34.003493.

Single-frequency narrow-linewidth Tm-doped fiber laser using silicate glass fiber.

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  • 1AdValue Photonics, 4585 S Palo Verde Road, Suite 405, Tucson, Arizona 85714, USA. jgeng@advaluephotonics.com


Single-frequency laser operation near 2 microm has been demonstrated in an all-fiber short-cavity (2-6 cm) distributed feedback laser cavity using both cladding- and core-pump configurations in a newly developed heavily Tm-doped multicomponent silicate glass fiber. Using a single-mode Er-doped fiber laser at 1575 nm as a core-pump source, a 2-cm-long distributed Bragg reflector fiber laser delivers single-frequency output at 1950 nm with laser linewidth less than 3 kHz, which is, to the best of our knowledge, the narrowest linewidth demonstrated to date from any 2 microm single-frequency laser.

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