High Power Ultranarrow Linewidth Picosecond Laser System Based on Tapered Fiber Amplifier and Gain-Switched DFB Laser Diode
| Autor: | Andrey B. Petrov, Grigory A. Mikhailovsky, Alexander V. Gorbatchev, Maxim A. Odnoblyudov, Joona Rissanen, Valery N. Filippov, Regina V. Gumenyuk |
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| Přispěvatelé: | Tampere University, Physics |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Lightwave Technology. 40:3930-3934 |
| ISSN: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2022.3149350 |
| Popis: | We experimentally demonstrate the highest spectral brightness for the pulsed fiber lasers to the best of our knowledge in a compact high power and pulse energy laser system consisting of a DFB laser diode as a master oscillator and a high-power fiber amplifier based on a double-clad active tapered fiber (T-DCF). Due to the unique properties of T-DCF, this system provides more than 1 MW of peak power and pulse energy of more than 60 μJ at a frequency of 500 kHz while maintaining a spectral width of less than 0.1 nm. The spectrum broadening limits the further power scaling of the laser system. The system is capable of delivering up to 150 W average power at 10 MHz pulse repetition rate with 0.14 nm linewidth. We also demonstrate the second harmonic generation of 532 nm with over 30 W at 10 MHz repetition rate and 14.5 W at 500 kHz. The experimental results reveals that the narrow linewidth system based on a DFB laser diode and a T-DCF amplifier is an excellent and robust solution for material processing and Raman spectroscopy. acceptedVersion |
| Databáze: | OpenAIRE |
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