碲化铋倏逝场锁模器件的超快光纤激光器

张世达; 耿乙迦

doi:10.37188/CO.2021-0216

Volume 15 Issue 3

May 2022

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Chinese Optics > 2022 > 15(3): 433-442.

ZHANG Shi-da, GENG Yi-jia. Ultrafast fiber laser based on bismuth telluride evanescent field mode-locked device[J]. Chinese Optics, 2022, 15(3): 433-442. doi: 10.37188/CO.2021-0216

Citation:

ZHANG Shi-da, GENG Yi-jia. Ultrafast fiber laser based on bismuth telluride evanescent field mode-locked device[J]. Chinese Optics, 2022, 15(3): 433-442. doi: 10.37188/CO.2021-0216

ZHANG Shi-da, GENG Yi-jia. Ultrafast fiber laser based on bismuth telluride evanescent field mode-locked device[J]. Chinese Optics, 2022, 15(3): 433-442. doi: 10.37188/CO.2021-0216

Citation:

ZHANG Shi-da, GENG Yi-jia. Ultrafast fiber laser based on bismuth telluride evanescent field mode-locked device[J]. Chinese Optics, 2022, 15(3): 433-442. doi: 10.37188/CO.2021-0216

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Ultrafast fiber laser based on bismuth telluride evanescent field mode-locked device

doi: 10.37188/CO.2021-0216

ZHANG Shi-da^{1, 2
,},
GENG Yi-jia^{1
,
,}

1.
State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
Changchun Chongming Technology Co., Ltd, Changchun 130119, China

Funds: Supported by Science and Technology Development Project of Jilin Province (No. 20210201026GX, No. 20210204188YY)

More Information

Corresponding author: gengyijia_jlu@163.com
Received Date: 13 Dec 2021
Rev Recd Date: 04 Jan 2022
Accepted Date: 13 Feb 2022

Available Online: 07 Apr 2022

Publish Date: 15 May 2022

Abstract

Abstract

In order to realize the passively harmonic mode-locking with high repetition rate in the fiber laser. A saturable absorber (SA) based on two dimensional (2D) topological insulators material of Bismuth telluride (Bi₂Te₃), combining with a side-polished fiber, was fabricated by laser deposition technology in this study. This device has a modulation depth of 23.96%, nonsaturable loss of 37.77% and saturable intensity of 31.5 MW/cm². According to the adjustment of dispersion in the whole cavity and the excellent nonlinear saturable absorb character in topological insulator materials, a self-starting mode-locking is realized successfully when this SA device is applied in the Er-doped fiber laser, with a central wavelength of 1555.67 nm, pulse duration of 487 fs, repetition rate of 47.87 MHz and signal-to-noise ratio of 58 dB. A harmonic mode-locking is achieved when the pump power is over 150 mW. When we adjust and increase slightly the pump power till 250 mW, the harmonic mode-locking of 11 orders is achieved with the repetition rate of 528 MHz and the signal-to-noise ratio of 41.5 dB. These results demonstrate that with the evanescent field produced by the side-polished fiber, the damage threshold of materials can be improved and the passively harmonic mode-locking with high repetition rate is realized, which has a great significance for the materials in the application of ultrafast fiber laser with high repetition rate.
- tow dimensional material,
- saturable absorber,
- evanescent field,
- ultrafast fiber laser

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References(37)

References

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