Passively Harmonic Mode-Locked Fiber Laser With a High Signal-to-Noise Ratio via Evanescent-Light Deposition of Bismuth Telluride <named-content content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="TeX">$(\hbox{Bi}_{2}\hbox{Te}_{3} )$</tex-math></inline-formula></named-content> Topological Insulator Based Saturable Absorber

L. N. Duan; Y. G. Wang; C. W. Xu; L. Li; Y. S. Wang

doi:10.1109/JPHOT.2015.2404315

IEEE Photonics Journal (Jan 2015)

Passively Harmonic Mode-Locked Fiber Laser With a High Signal-to-Noise Ratio via Evanescent-Light Deposition of Bismuth Telluride <named-content content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="TeX">$(\hbox{Bi}_{2}\hbox{Te}_{3} )$</tex-math></inline-formula></named-content> Topological Insulator Based Saturable Absorber

L. N. Duan,
Y. G. Wang,
C. W. Xu,
L. Li,
Y. S. Wang

Affiliations

L. N. Duan: State Key Lab. of Transient Opt. & Photonics, Xi'an Inst. of Opt. & Precision Mech., Xi'an, China
Y. G. Wang: State Key Lab. of Transient Opt. & Photonics, Xi'an Inst. of Opt. & Precision Mech., Xi'an, China
C. W. Xu: Coll. of Optoelectron. Eng., Shenzhen Univ., Shenzhen, China
L. Li: State Key Lab. of Transient Opt. & Photonics, Xi'an Inst. of Opt. & Precision Mech., Xi'an, China
Y. S. Wang: State Key Lab. of Transient Opt. & Photonics, Xi'an Inst. of Opt. & Precision Mech., Xi'an, China

DOI: https://doi.org/10.1109/JPHOT.2015.2404315
Journal volume & issue: Vol. 7, no. 2
pp. 1 – 7

Abstract

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Passively harmonic mode locking (HML) operation had been demonstrated in an erbium-doped fiber laser with a microfiber-based topological insulator (TI) Bi2Te3 saturable absorber (SA). It was found that the pulse train possessed different orders of HML (with a tunable repetition rate from 232 to 390 MHz) due to different incident pump powers. The spectra exhibited typical features of conventional solitons (perfect Gaussian profile with Kelly sidebands) with no continuous wave component. The measured signal-to-noise ratio (SNR) reached 60 dB, whereas the pulse duration was kept around 1.32 ps without significant change. The experimental observation revealed that the microfiber-based TI device could indeed be employed as a high-performance SA for further applications in ultrafast photonics.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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