期刊
LASER PHYSICS LETTERS
卷 11, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/11/6/065102
关键词
mid-IR fiber laser; fluoride fiber lasers; Q-switching; SESAM
资金
- National Nature Science Foundation of China [61377042, 61107037, 61327004]
- European Commission [911333]
A diode-cladding-pumped mid-infrared passively Q-switched Ho3+-doped fluoride fiber laser using a reverse designed broad band semiconductor saturable mirror (SESAM) was demonstrated. Nonlinear reflectivity of the SESAM was measured using an in-house Yb3+-doped mode-locked fiber laser at 1062 nm. Stable pulse train was produced at a slope efficient of 12.1% with respect to the launched pump power. Maximum pulse energy of 6.65 mu J with a pulse width of 1.68 mu s and signal-to-noise ratio (SNR) of similar to 50 dB was achieved at a repetition rate of 47.6 kHz and center wavelength of 2.971 mu m. To the best of our knowledge, this is the first 3 mu m region SESAM-based Q-switched fiber laser with the highest average power and pulse energy, as well as the longest wavelength from mid-infrared passively Q-switched fluoride fiber lasers.
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