High-temperature linearly polarized single-frequency fiber lasers based on a non-polarization-maintaining FBG preparation through a femtosecond laser

A high-temperature-resistant linearly polarized single-frequency distributed Bragg reflector fiber laser is demonstrated by using a femtosecond laser and directly fabricating a pair of fiber Bragg gratings (FBGs) into an erbium-doped fiber (EDF). A high-reflection FBG with high birefringence prepare...

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Published in:Optics letters 2022-08, Vol.47 (16), p.4111
Main Authors: Lv, Ruidong, Chen, Tao, Pham, Xuantung, Si, Jinhai, Huang, Jin, Hou, Yuxing, Gao, Bo, Hou, Xun
Format: Article
Language:English
Subjects:
Birefringence
Bragg gratings
Bragg reflectors
Cavity resonators
Doped fibers
Erbium
Fiber lasers
High temperature
Linear polarization
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cited_by cdi_FETCH-LOGICAL-c257t-3f7d43eee7b2d1cac8ea5c17ea40b142813f5958d71ab781e598bfc9e8f6d9db3
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container_issue 16
container_start_page 4111
container_title Optics letters
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creator Lv, Ruidong
Chen, Tao
Pham, Xuantung
Si, Jinhai
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Hou, Yuxing
Gao, Bo
Hou, Xun
description A high-temperature-resistant linearly polarized single-frequency distributed Bragg reflector fiber laser is demonstrated by using a femtosecond laser and directly fabricating a pair of fiber Bragg gratings (FBGs) into an erbium-doped fiber (EDF). A high-reflection FBG with high birefringence prepared by femtosecond laser overexposure is used as a polarization selector. The integrated resonator cavity is 0.82 cm to ensure single-frequency operation. After annealing treatment, the laser can work stably at 600°C, and no mode hopping happens at different temperatures. By using the residual pump light and a suitable EDF to amplify the laser, a narrow linewidth laser with an output power of 26.3 mW, a degree of polarization reaching 0.984, and a linewidth less than 4 kHz is obtained.
doi_str_mv 10.1364/OL.463062
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source Optica Publishing Group Journals
subjects Birefringence
Bragg gratings
Bragg reflectors
Cavity resonators
Doped fibers
Erbium
Fiber lasers
High temperature
Linear polarization
title High-temperature linearly polarized single-frequency fiber lasers based on a non-polarization-maintaining FBG preparation through a femtosecond laser
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