Research progress of random fiber lasers’ characteristics in time-frequency-spatial domain

Mengqiu Fan; Shengtao Lin; han Wu; Wanguo Zheng; Zinan Wang

doi:10.11884/HPLPB202133.210306

Journals >High Power Laser and Particle Beams >Volume 33 >Issue 11 >Page 111003 > Article

High Power Laser and Particle Beams
Vol. 33, Issue 11, 111003 (2021)

Research progress of random fiber lasers’ characteristics in time-frequency-spatial domain

Mengqiu Fan^1、4, Shengtao Lin², han Wu³, Wanguo Zheng^1、*, and Zinan Wang^2、*

Author Affiliations

¹Laser Fusion Research Center, CAEP, P. O. Box 919-988, Mianyang 621900, China

²Key Laboratory of Optical Fiber Sensing and Communications of Ministry of Education, University of Electronic Science and Technology of China, Chengdu 611731, China

³College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China

⁴Graduate School of China Academy of Engineering Physics, Beijing 100088, China

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DOI: 10.11884/HPLPB202133.210306 Cite this Article

Mengqiu Fan, Shengtao Lin, han Wu, Wanguo Zheng, Zinan Wang. Research progress of random fiber lasers’ characteristics in time-frequency-spatial domain[J]. High Power Laser and Particle Beams, 2021, 33(11): 111003 Copy Citation Text

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Abstract

The recent research progress of random distributed feedback fiber lasers in the time-frequency-spatial domain is systemically reviewed in this paper. The factors influencing the time-frequency-spatial dynamic characteristics of random distributed feedback fiber lasers are analyzed and summarized. Finally, the prospects of random distributed feedback fiber lasers used in high-power laser driving facility are put forward, and the potential research area in future is discussed.

Keywords

frequency domain high power laser facility low coherent random fiber laser spatial domain time domain

$ \frac{{{\rm{d}}P_{\rm{p}}^ \pm }}{{{\rm{d}} {\textit{z}} }} = \mp {\alpha _{\rm{p}}}P_{\rm{p}}^ \pm \mp g\frac{{{f_{\rm{p}}}}}{{{f_{\rm{l}}}}}P_{\rm{p}}^ \pm \left[ {P_{\rm{l}}^ + + P_{\rm{l}}^ - + 4h{f_{\rm{l}}}\Delta f\left( {1 + \frac{1}{{{{\rm{e}}^{h({f_{\rm{p}}} - {f_{\rm{l}}})/{K_{\rm{B}}}T}} - 1}}} \right)} \right] \pm {\varepsilon _{\rm{p}}}P_{\rm{p}}^ \pm $

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$ \begin{gathered} \frac{{{\rm{d}}P_{\rm{l}}^ \pm }}{{{\rm{d}} {\textit{z}}}} = \mp {\alpha _{\rm{l}}}P_{\rm{l}}^ \pm \pm g\left[ {P_{\rm{l}}^ \pm + 2h{f_{\rm{l}}}\Delta f\left( {1 + \frac{1}{{{{\rm{e}}^{h({f_{\rm{p}}} - {f_{\rm{l}}})/{K_{\rm{B}}}T}} - 1}}} \right)} \right]\left( {P_{\rm{p}}^ + + P_{\rm{p}}^ - } \right) \pm {\varepsilon _{\rm{l}}}P_{\rm{l}}^ \mp \hfill \\ \hfill \\ \end{gathered} $

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$ \begin{aligned} & \frac{{\partial A_{\rm{p}}^ \pm }}{{\partial {\textit{z}} }} - \frac{1}{{{v_{{\rm{gs}}}}}}\frac{{\partial A_{\rm{p}}^ \pm }}{{\partial t}} + \frac{i}{2}{\beta _{2{\rm{p}}}}\frac{{{\partial ^2}A_{\rm{p}}^ \pm }}{{\partial {t^2}}} + \frac{{{\alpha _{\rm{p}}}}}{2}A_{\rm{p}}^ \pm = i{\gamma _{\rm{p}}}{\left| {A_{\rm{p}}^ \pm } \right|^2}A_{\rm{p}}^ \pm - \frac{{{g_{\rm{p}}}(\omega )}}{2}\left( {\left\langle {{{\left| {A_{\rm{s}}^ \pm } \right|}^2}} \right\rangle + \left\langle {{{\left| {A_{\rm{s}}^ \mp } \right|}^2}} \right\rangle } \right)A_{\rm{p}}^ \pm \\ & \frac{{\partial A_{\rm{s}}^ \pm }}{{\partial {\textit{z}} }} + \frac{i}{2}{\beta _{2{\rm{s}}}}\frac{{{\partial ^2}A_{\rm{s}}^ \pm }}{{\partial {t^2}}} + \frac{{{\alpha _{\rm{s}}}}}{2}A_{\rm{s}}^ \pm - \frac{{\varepsilon (\omega )}}{2}A_{\rm{s}}^ \pm = i{\gamma _{\rm{s}}}{\left| {A_{\rm{s}}^ \pm } \right|^2}A_{\rm{s}}^ \pm + \frac{{{g_{\rm{s}}}(\omega )}}{2}\left( {\left\langle {{{\left| {A_{\rm{p}}^ \pm } \right|}^2}} \right\rangle + \left\langle {{{\left| {A_{\rm{p}}^ \mp } \right|}^2}} \right\rangle } \right)A_{\rm{s}}^ \pm \end{aligned} $

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