Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Continuous and discrete-point Rayleigh reflectors inscribed by femtosecond pulses in singlemode and multimode fibers. / Dostovalov, Alexandr; Wolf, Alexey; Munkueva, Zhibzema и др.
в: Optics and Laser Technology, Том 167, 109692, 12.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Continuous and discrete-point Rayleigh reflectors inscribed by femtosecond pulses in singlemode and multimode fibers
AU - Dostovalov, Alexandr
AU - Wolf, Alexey
AU - Munkueva, Zhibzema
AU - Skvortsov, Mikhail
AU - Abdullina, Sofia
AU - Kuznetsov, Aleksey
AU - Babin, Sergey
N1 - Funding: Russian Science Foundation (21-72-30024).
PY - 2023/12
Y1 - 2023/12
N2 - In this paper we present the results on structures inscription to enhance Rayleigh backscattering up to +60 dB in the wide spectral range in singlemode and multimode fibers by tightly focused femtosecond laser radiation. Continuous and discrete-point artificial Rayleigh reflectors were produced and optimized in terms of backscattering enhancement level and insertion losses. The linewidth narrowing of single-frequency DFB Er-doped fiber laser based on the developed 40-cm long artificial Rayleigh reflector in singlemode fiber was demonstrated. Moreover, the various types (1D, 2D, 3D) of localized Rayleigh reflectors were inscribed in the multimode GRIN fiber revealing the strong dependence of backscattering signal on the positions of scattering points in the fiber core cross-section and on the modes composition incident on the reflector. Due to the random distributed feedback based on the developed multimode Rayleigh reflectors, we observed random lasing in 1-km MM GRIN fiber with good (M2 < 3) beam quality at much lower threshold power than that for lasing based on natural Rayleigh backscattering.
AB - In this paper we present the results on structures inscription to enhance Rayleigh backscattering up to +60 dB in the wide spectral range in singlemode and multimode fibers by tightly focused femtosecond laser radiation. Continuous and discrete-point artificial Rayleigh reflectors were produced and optimized in terms of backscattering enhancement level and insertion losses. The linewidth narrowing of single-frequency DFB Er-doped fiber laser based on the developed 40-cm long artificial Rayleigh reflector in singlemode fiber was demonstrated. Moreover, the various types (1D, 2D, 3D) of localized Rayleigh reflectors were inscribed in the multimode GRIN fiber revealing the strong dependence of backscattering signal on the positions of scattering points in the fiber core cross-section and on the modes composition incident on the reflector. Due to the random distributed feedback based on the developed multimode Rayleigh reflectors, we observed random lasing in 1-km MM GRIN fiber with good (M2 < 3) beam quality at much lower threshold power than that for lasing based on natural Rayleigh backscattering.
KW - Femtosecond laser micromachining
KW - Raman fiber laser
KW - Rayleigh backscattering
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85161714521&origin=inward&txGid=298b63d08c4cc9bce7540c6abf61c43a
UR - https://www.mendeley.com/catalogue/72058e9c-5408-36dc-931b-602b307f8da6/
U2 - 10.1016/j.optlastec.2023.109692
DO - 10.1016/j.optlastec.2023.109692
M3 - Article
VL - 167
JO - Optics and Laser Technology
JF - Optics and Laser Technology
SN - 0030-3992
M1 - 109692
ER -
ID: 53592810