High-power transmission characterization of Chalcogenide glasses using a Tm:fiber laser system

Pankaj Kadwani; Joshua Bradford; R. Andrew Sims; David Musgraves; Kathleen Richardson; Lawrence Shah; Martin C. Richardson

doi:10.1117/12.909505

6 February 2012 High-power transmission characterization of Chalcogenide glasses using a Tm:fiber laser system

Pankaj Kadwani, Joshua Bradford, R. Andrew Sims, David Musgraves, Kathleen Richardson, Lawrence Shah, Martin C. Richardson

Author Affiliations +

Proceedings Volume 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications; 82390A (2012) https://doi.org/10.1117/12.909505
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

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.

Citation Download Citation

Pankaj Kadwani, Joshua Bradford, R. Andrew Sims, David Musgraves, Kathleen Richardson, Lawrence Shah, and 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); https://doi.org/10.1117/12.909505

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