Harmonic Mode-Locked Fiber Laser based on Photonic Crystal Fiber Filled with Topological Insulator Solution

Autor: Yu-Shan Chen, Pei-Guang Yan, Hao Chen, Ai-Jiang Liu, Shuang-Chen Ruan
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Photonics, Vol 2, Iss 2, Pp 342-354 (2015)
Druh dokumentu: article
ISSN: 2304-6732
DOI: 10.3390/photonics2020342
Popis: We reported that the photonic crystal fiber (PCF) filled with TI:Bi2Te3 nanosheets solution could act as an effective saturable absorber (SA). Employing this TI-PCF SA device; we constructed an ytterbium-doped all-fiber laser oscillator and achieved the evanescent wave mode-locking operation. Due to the large cavity dispersion; the fundamental mode-locking pulse had the large full width at half maximum (FWHM) of 2.33 ns with the repetition rate of ~1.11 MHz; and the radio frequency (RF) spectrum with signal-to-noise ratio (SNR) of 61 dB. In addition; the transition dynamics from a bunched state of pulses to harmonic mode-locking (HML) was also observed; which was up to 26th order.
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