High-power fiber laser with a polarizing diffraction grating milled on the facet of an optical fiber

0468069 - ÚFE 2017 RIV US eng J - Článek v odborném periodiku
Vaněk, Martin - Vaniš, Jan - Baravets, Yauhen - Todorov, Filip - Čtyroký, Jiří - Honzátko, Pavel
High-power fiber laser with a polarizing diffraction grating milled on the facet of an optical fiber.
Optics Express. Roč. 24, č. 26 (2016), s. 30225-30233. ISSN 1094-4087
Grant CEP: GA ČR GA15-07908S
Institucionální podpora: RVO:67985882
Klíčová slova: Optical fibers * Polarization * Diffraction gratings
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
Impakt faktor: 3.307, rok: 2016

We milled a sub-wavelength diffraction grating on the facet of a large mode area fiber. The diffraction grating had different reflectivities for TE and TM polarized light. It was tested in a thulium-doped fiber laser where it functioned as a low reflectivity output mirror integrated with an intracavity polarizer. Compared to the laser with a perpendicularly cleaved output fiber, the laser with diffraction grating had a slightly increased threshold power and the same slope efficiency. The beam quality factor M2 was not impaired. Polarization extinction ratios of about 20 dB that were observed at low laser powers dropped to 10 dB at high powers
Trvalý link: http://hdl.handle.net/11104/0265960