4.5 Article

8-Hydroxyquinolino cadmium chloride hydrate for generating nanosecond and picosecond pulses in erbium-doped fiber laser cavity

期刊

OPTICAL FIBER TECHNOLOGY
卷 61, 期 -, 页码 -

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2020.102439

关键词

Fiber-laser; Q-switch; Saturable absorber

资金

  1. Airlangga University

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In this study, a thin-film saturable absorber based on 8-Hydroxyquinolino cadmium chloride hydrate material was experimentally used as a Q-switcher and mode-locker in an erbium-doped fiber laser cavity. Nanosecond and picosecond pulses were generated passively in the cavity, with the Q-switched laser producing pulses with specific parameters and the mode-locked laser producing pulses with different characteristics.
In this paper, we experimentally proposed and demonstrated the application of thin-film saturable absorber (SA) based on 8-Hydroxyquinolino cadmium chloride hydrate (8-HQCdCl(2)H(2)O) material as both Q-switcher and mode-locker in the cavity of erbium-doped fiber laser (EDFL). The 8-HQCdCl(2)H(2)O was embedded in polyvinyl alcohol (PVA) to fabricate the thin-film, which has then employed in the Q-switched and mode-locked EDFL cavity for passively generating nanosecond and picosecond pulses, respectively. At the maximum pump power of 167 mW, the Q-switched laser-produced pulse train with a pulse width of 726 ns, a repetition rate of 150 kHz, and a signal-to-noise ratio (SNR) of 72 dB. We also demonstrated the generation of mode-locked picosecond pulses by adding 200 m long single-mode fiber (SMF) into the ring EDFL cavity. The mode-locked laser-generated pulses have a pulse width of 1.83 ps, a repetition rate of 1 MHz, and the SNR of 77 dB for the electrical spectrum.

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