Soliton compression of the erbium-doped fiber laser weakly started mode-locking by nanoscale p-type Bi2Te3 topological insulator particles

We demonstrate the nanoscale p-type Bi2Te3 powder-based saturable absorber-induced passive mode-locking of the erbium-doped fiber laser (EDFL) with sub-picosecond pulsewidth. Such a nanoscale topological insulator powder is obtained by polishing the bulk p-type Bi2Te3 in a commercial thermoelectric...

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Bibliographic Details
Published in:Laser physics letters 2014-05, Vol.11 (5)
Main Authors: Lin, Yung-Hsiang, Yang, Chun-Yu, Lin, Sheng-Feng, Tseng, Wei-Hsuan, Bao, Qiaoliang, Wu, Chih-I, Lin, Gong-Ru
Format: Article
Language:English
Subjects:
compression
fiber laser
mode-locking
nano-particle
soliton
topological insulator
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Summary:We demonstrate the nanoscale p-type Bi2Te3 powder-based saturable absorber-induced passive mode-locking of the erbium-doped fiber laser (EDFL) with sub-picosecond pulsewidth. Such a nanoscale topological insulator powder is obtained by polishing the bulk p-type Bi2Te3 in a commercial thermoelectric cooler (TE cooler). This is then directly brushed onto the end-face of a single-mode fiber patchcord, to avoid any mis-connecting loss caused by laser beam divergence, which can result in a mode-locked pulsewidth of 436 fs in the self-amplitude modulation mode of a TE cooler. To further shorten the pulse, the soliton compression is operated by well-controlling the group delay dispersion and self-phase modulation, providing the passively mode-locked EDFL with a pulsewidth as short as 403 fs.
ISSN:1612-2011
1612-202X
DOI:10.1088/1612-2011/11/5/055107