Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Pulsed generation of multimode diode-pumped graded-index fiber Raman laser. / Kuznetsov, Alexey G.; Nemov, Ilya N.; Wolf, Alexey A. et al.
High-Power Lasers and Applications X. ed. / Ruxin Li; Upendra N. Singh; Shibin Jiang. SPIE, 2019. p. 2537769 111810K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11181).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
}
TY - GEN
T1 - Pulsed generation of multimode diode-pumped graded-index fiber Raman laser
AU - Kuznetsov, Alexey G.
AU - Nemov, Ilya N.
AU - Wolf, Alexey A.
AU - Kablukov, Sergey I.
AU - Babin, Sergey A.
N1 - This study was supported in parts by the state budget of the Russian Federation (IA&E, reg. №AAAA-A17-117062110026-3), and the work of A.G.K., A.A.W, and S.A.B. on the FBG effect on beam quality of multimode Raman fiber laser was supported by Russian Foundation for Basic Research (19-52-53021).
PY - 2019/11/19
Y1 - 2019/11/19
N2 - 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.
AB - 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.
KW - beam clean-up
KW - diode pumping
KW - fiber laser
KW - graded-index fiber
KW - Raman laser
KW - CW
UR - http://www.scopus.com/inward/record.url?scp=85079057083&partnerID=8YFLogxK
UR - https://elibrary.ru/item.asp?id=42758401
U2 - 10.1117/12.2537769
DO - 10.1117/12.2537769
M3 - Conference contribution
AN - SCOPUS:85079057083
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 2537769
BT - High-Power Lasers and Applications X
A2 - Li, Ruxin
A2 - Singh, Upendra N.
A2 - Jiang, Shibin
PB - SPIE
T2 - High-Power Lasers and Applications X 2019
Y2 - 22 October 2019 through 23 October 2019
ER -
ID: 23425720