@inproceedings{371e2739a60e4c6c822b7b2a4aa0f3d4,
title = "High-power and pulse energy picosecond narrow linewidth laser system based on tapered fiber amplifier for second harmonic generation",
abstract = "We present the results of compact and cost-efficient high-power and energy laser system based on a picosecond gain-switched DFB laser diode operating at a wavelength of 1064 nm with spectral linewidth less than 0.1 nm and pulse duration of 50 ps and tapered double clad fiber (T-DCF) amplifier. The unique properties of T-DCF as efficient amplification of low power seed signal and suppressed threshold of nonlinearities allow achievement of both high peak power of 170 kW and pulse energy of 9 µJ at pulse repetition rate of 10 MHz while maintaining spectrum linewidth as narrow as 0.1 nm. High average output power of 150 W was obtained with slightly broader laser linewidth. We also demonstrate second harmonic generation with over 30 W at 532 nm wavelength with conversion efficiency of 38%. These results make MOPA system based on gain-switched DFB laser diode and T-DCF amplifier an attractive source for material processing and sensing application including time resolved Raman spectroscopy.",
keywords = "Active tapered fiber, Second harmonic generation, Ultrafast lasers",
author = "Andrey Petrov and Grigory Mikhailovsky and Alexander Gorbatchev and Maxim Odnoblyudov and Mikhail Kozlyakov and Joona Rissanen and Regina Gumenyuk and Valery Filippov",
note = "JUFOID=71479 Funding Information: The research is partially funded by the Ministry of Science and Higher Education of the Russian Federation as part of World-classResearchCenterprogram:AdvancedDigitalTechnologies(contractNo.075-15-2020-934dated17.11.2020); PhotonicsResearchandInnovation(PREIN)(320165);AcademyofFinlandFlagshipProgramme. Funding Information: The research is partially funded by the Ministry of Science and Higher Education of the Russian Federation as part of World-class Research Center program: Advanced Digital Technologies (contract No. 075-15-2020-934 dated 17.11.2020); Photonics Research and Innovation (PREIN) (320165); Academy of Finland Flagship Programme. Publisher Copyright: {\textcopyright} 2021 SPIE.; Fiber Lasers XVIII: Technology and Systems ; Conference date: 06-03-2021 Through 11-03-2021",
year = "2021",
doi = "10.1117/12.2577634",
language = "English",
isbn = "9781510641655",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Zervas, {Michalis N.} and Cesar Jauregui-Misas",
booktitle = "Fiber Lasers XVIII",
address = "United States",
}