We report on the development of an all-fiber, 793-nm cladding-pumped tunable Tm-doped fiber laser based on a voltage driven 2-μm, intra-cavity, fiber-coupled, Fabry-Perot tunable filter. Continuous tuning over a 90-nm range has been achieved from 1952 to 2042 nm with a spectral linewidth ≤0.07 nm and an optical signal-to-noise ratio <55 dB. A wavelength stability of ±0.01 nm over a run time of 2 hours has been demonstrated. The desired wavelength from the available 90 nm of tuning range can be selected by the filter with a kHz repetition rate.
Wenyan Tian, Robert A. Stegeman, and Eric D. Park, "All-fiber widely tunable 2 µm fiber laser," Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 1008320 (Presented at SPIE LASE: February 03, 2017; Published: 22 February 2017); https://doi.org/10.1117/12.2249922.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon