22 February 2017 Spontaneous laser-line sweeping in Ho-doped fiber laser
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Abstract
Spontaneous laser-line sweeping refers to fiber laser instabilities with regular laser wavelength drift within a broad range that may exceed 10 nm; other characteristics of the laser output are sustained relaxation self-pulsing and narrow spectral linewidth. The laser wavelength drift is caused by standing-wave in the cavity; it can be regarded as a special case of mode instability of longitudinal modes of the laser resonator. Self-sweeping was observed so far in Yb, Er, Tm and Bidoped fiber lasers. We report on Ho-doped fiber laser self-sweeping in interval of 3-5 nm near 2100 nm. The sweeping rate was typically 0.7-0.9 nm/s. The thulium-doped fiber lasers at around 2030 nm and 1950 nm were tested as pump sources. The self-sweeping was registered by FTIR spectrometer and the data processing is discussed.
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Jan Aubrecht, Jan Aubrecht, Pavel Peterka, Pavel Peterka, Pavel Koška, Pavel Koška, Pavel Honzátko, Pavel Honzátko, Michal Jelínek, Michal Jelínek, Michal Kamrádek, Michal Kamrádek, Milan Frank, Milan Frank, Václav Kubeček, Václav Kubeček, Ivan Kašík, Ivan Kašík, } "Spontaneous laser-line sweeping in Ho-doped fiber laser", Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 100831V (22 February 2017); doi: 10.1117/12.2249486; https://doi.org/10.1117/12.2249486
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