Research output: Contribution to journal › Article › peer-review
Time-resolved mode analysis in Er-doped self-sweeping ring fiber laser. / Poddubrovskii, N. R.; Lobach, I. A.; Podivilov, E. V. et al.
In: Laser Physics Letters, Vol. 19, No. 12, 125102, 12.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Time-resolved mode analysis in Er-doped self-sweeping ring fiber laser
AU - Poddubrovskii, N. R.
AU - Lobach, I. A.
AU - Podivilov, E. V.
AU - Kablukov, S. I.
N1 - Funding Information: The work is supported by Russian Science Foundation (Grant No. 18-12-00243, https://rscf.ru/project/18-12-00243/ ). We thank the multiple-access center ‘High-resolution spectroscopy of gases and condensed matters’ at IAE SB RAS for the use of their equipment. Publisher Copyright: © 2022 Astro Ltd.
PY - 2022/12
Y1 - 2022/12
N2 - We present here a detailed study of the mode composition of an Er-doped ring self-sweeping fiber laser. Time-resolved heterodyne measurements prove that the radiation consists of slightly overlapping rectangular mode packets, each of which corresponds to generation of individual longitudinal modes. Optical frequency of each following packet sequentially increases by two free spectral ranges of the laser cavity. The presence of parametric processes during sequential growth of the neighboring mode packets is experimentally demonstrated for the first time in a self-sweeping laser. Instantaneous linewidth of the laser radiation does not exceed 4 kHz during every step of single longitudinal mode generation, which is also accompanied by a small change of the optical frequency (chirp) of ∼40 kHz associated with an integral change of the laser cavity refractive index. The results are useful for calculations and modeling of laser systems based on dynamic gratings.
AB - We present here a detailed study of the mode composition of an Er-doped ring self-sweeping fiber laser. Time-resolved heterodyne measurements prove that the radiation consists of slightly overlapping rectangular mode packets, each of which corresponds to generation of individual longitudinal modes. Optical frequency of each following packet sequentially increases by two free spectral ranges of the laser cavity. The presence of parametric processes during sequential growth of the neighboring mode packets is experimentally demonstrated for the first time in a self-sweeping laser. Instantaneous linewidth of the laser radiation does not exceed 4 kHz during every step of single longitudinal mode generation, which is also accompanied by a small change of the optical frequency (chirp) of ∼40 kHz associated with an integral change of the laser cavity refractive index. The results are useful for calculations and modeling of laser systems based on dynamic gratings.
KW - Er-doped laser
KW - fiber lasers
KW - four-wave mixing
KW - frequency chirp
KW - parametric process
KW - self-sweeping
UR - http://www.scopus.com/inward/record.url?scp=85142002771&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/602220f6-4d4e-36dd-a006-6fdb0eb3d61c/
U2 - 10.1088/1612-202X/ac9ce1
DO - 10.1088/1612-202X/ac9ce1
M3 - Article
AN - SCOPUS:85142002771
VL - 19
JO - Laser Physics Letters
JF - Laser Physics Letters
SN - 1612-2011
IS - 12
M1 - 125102
ER -
ID: 39520897