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We report on our research into fluoride fiber-based 3 µm class laser sources. Using holmium as the gain medium, record-high peak power levels are achieved in mode-locked laser systems that emit ultrashort pulses in the water vapor transmission window around 2.9 µm. Highly nonlinear and dispersion-engineered hybrid chalcogenide-polymer microwires are utilized to extend the frequency range of those...
100 ns, 40 W peak power, Q-switched pulses are produced from a holmium-praseodymium co-doped fiber laser with repetition rates from 100–200 kHz. A 20% slope efficiency was achieved with respect to the launched pump power.
An octave spanning spectrum is generated in an As2S3 taper via 77 pJ pulses from an ultrafast fiber laser. Chirp compensation allows the octave to be generated directly from the un-amplified laser output.
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