6 February 2012 High-power transmission characterization of Chalcogenide glasses using a Tm:fiber laser system
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Chalcogenide samples with varying selenium concentrations, As10Se90, As30Se70, As40Se60, and As50Se50, were characterized for high power transmission using a Tm:fiber laser system. The Tm:fiber laser oscillator consists of a LMA fiber with 25/400 μm core/cladding diameters pumped by 793 nm diode. The output beam was collimated to a 3 mm beam diameter, and transmitted through the chalcogenide samples at CW powers up to 23 W. We measure the transmission as a function of incident power, as well as some initial characterization of surface damage from nanosecond pulses at 2 μm. Furthermore, we utilize a wavefront sensor to characterized the thermal lens induced by the Tm:fiber laser.
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Pankaj Kadwani, Pankaj Kadwani, Joshua Bradford, Joshua Bradford, R. Andrew Sims, R. Andrew Sims, David Musgraves, David Musgraves, Kathleen Richardson, Kathleen Richardson, Lawrence Shah, Lawrence Shah, Martin C. Richardson, Martin C. Richardson, } "High-power transmission characterization of Chalcogenide glasses using a Tm:fiber laser system", Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 82390A (6 February 2012); doi: 10.1117/12.909505; https://doi.org/10.1117/12.909505


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