Rational harmonic mode-locked laser using a bismuth-oxide-based highly nonlinear erbium-doped fiber

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• 作者：Yutaka Fukuchi^a ; ^{fukuchi@ee.kagu.tus.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Kouji Hirata^b ; Masahiro Muraguchi^a ; Joji Maeda^c
• 关键词：Fiber lasers ; Tunable lasers ; Mode-locked lasers ; Rare-earth materials ; Nonlinear optics ; Kerr effect
• 刊名：Optics Communications
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：383
• 期：Complete
• 页码：397-401
• 全文大小：706 K

文摘

We report a rational harmonic mode-locked fiber laser employing a bismuth-oxide-based highly nonlinear erbium-doped fiber (Bi-HNL-EDF) with a length of 1.5 m. The Bi-HNL-EDF is used as a broadband gain medium and as a noise suppressor based on self-phase modulation. The amplitude of the rational harmonic mode-locked pulses can be regulated by properly tuning the modulation parameters of the intracavity modulator. The cavity length as short as 6 m enables generation of stable and clean short pulses with a repetition frequency up to 40 GHz over the wavelength range covering both the conventional and the longer bands.