Raman lasing in multimode GRIN fibers is accompanied by sufficient improvement of the output beam quality in comparison with that for pump radiation, which offers opportunities to wavelength-agile fiber lasers of new type. Here we compare power scaling and brightness enhancement capabilities of Raman laser based on multimode GRIN-fiber of 62.5/125 um core/cladding diameters pumped by ∼700 W multimode source with beam quality M2∼10, performed in two different cavity configurations: 1) linear cavity based on two fiber Bragg gratings and 2) half-open cavity with one FBG and random distributed feedback via Rayleigh backscattering along the GRIN fiber.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 6 May 2022|
|Event||29th Annual International Laser Physics Workshop, LPHYS 2021 - Virtual, Online|
Duration: 19 Jul 2021 → 23 Jul 2021
- 1.03 PHYSICAL SCIENCES AND ASTRONOMY