Pulsed generation of multimode diode-pumped graded-index fiber Raman laser

Alexey G. Kuznetsov, Ilya N. Nemov, Alexey A. Wolf, Sergey I. Kablukov, Sergey A. Babin

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

We report on the first demonstration of pulsed regime of Raman laser based on a multimode graded-index fiber directly pumped by a CW multimode laser diode. Proof-of-principle experiments have been performed with a 3.7-km multimode graded-index fiber with 62.5-μm core pumped by 976-nm high-power laser diode and cavity formed by bulk mirror and fiber Bragg grating with intra-cavity acousto-optic modulator providing Q-switching or mode locking. At 27.2-kHz repetition rate corresponding to the laser cavity round-trip frequency (i.e. in mode-locking regime), stable nanosecond pulses with peak power of ∼300 W have been observed both at the 1st (1018 nm) and 2nd (1064 nm) Stokes orders. At that, the beam quality of generated pulses is greatly improved as compared to that for the pump diode (M2>20) reaching M2=2 for the 2nd-order Stokes wave.

Язык оригиналаанглийский
Название основной публикацииHigh-Power Lasers and Applications X
РедакторыRuxin Li, Upendra N. Singh, Shibin Jiang
ИздательSPIE
Число страниц7
ISBN (электронное издание)9781510630796
DOI
СостояниеОпубликовано - 19 ноя 2019
СобытиеHigh-Power Lasers and Applications X 2019 - Hangzhou, Китай
Продолжительность: 22 окт 201923 окт 2019

Серия публикаций

НазваниеProceedings of SPIE - The International Society for Optical Engineering
Том11181
ISSN (печатное издание)0277-786X
ISSN (электронное издание)1996-756X

Конференция

КонференцияHigh-Power Lasers and Applications X 2019
СтранаКитай
ГородHangzhou
Период22.10.201923.10.2019

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  • Цитировать

    Kuznetsov, A. G., Nemov, I. N., Wolf, A. A., Kablukov, S. I., & Babin, S. A. (2019). Pulsed generation of multimode diode-pumped graded-index fiber Raman laser. В R. Li, U. N. Singh, & S. Jiang (Ред.), High-Power Lasers and Applications X [111810K] (Proceedings of SPIE - The International Society for Optical Engineering; Том 11181). SPIE. https://doi.org/10.1117/12.2537769