Short-length CW laser of Nd3+ heavily doped single-mode silica glass fiber fabricated by zeolite method

We constructed a CW fiber laser using a 40-mm-long Nd3+ heavily doped silica glass single-mode fiber (Nd-SMF). Its core glass was fabricated by the zeolite method, and its Nd2O3 doped density was measured as 1.25 wt%. Nd-SMF also demonstrated laser oscillation. The laser power reached 19.7 mW and it...

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Bibliographic Details
Published in:Optics communications 2020-11, Vol.475, Article 126270
Main Authors: Yamasaki, Yu, Hiraishi, Takayuki, Kagebayashi, Yoshio, Fujioka, Kana, Fujimoto, Yasushi
Format: Article
Language:English
Subjects:
Fiber laser
Short-length oscillator
Silica glass
Zeolite method
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Summary:We constructed a CW fiber laser using a 40-mm-long Nd3+ heavily doped silica glass single-mode fiber (Nd-SMF). Its core glass was fabricated by the zeolite method, and its Nd2O3 doped density was measured as 1.25 wt%. Nd-SMF also demonstrated laser oscillation. The laser power reached 19.7 mW and its slope efficiency and laser threshold were 14.6% and 22.0 mW, respectively. Such a short single-mode fiber will help us easily make a high repetition rate over GHz and a compact oscillator with adequate saturable absorbers. An Nd-SMF laser has the potential to achieve laser miniaturization and high repetitive pulsed oscillation. •Nd3+ heavily doped silica glass single-mode fiber (Nd-SMF) was fabricated.•We constructed a CW fiber laser using a 40-mm-long Nd-SMF.•The Nd-SMF laser output power reached 19.7 mW and its slope efficiency was 14.6%.•Our short-length Nd-SMF laser provided a simple & compact scheme for multi-GHz laser.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2020.126270