17 February 2017 100 J UV glass laser for dynamic compression research
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Abstract
A frequency tripled, Nd:Glass laser has been constructed and installed at the Dynamic Compression Sector located at the Advanced Photon Source. This 100-J laser will be used to drive shocks in condensed matter which will then be interrogated by the facility x-ray beam. The laser is designed for reliable operation, utilizing proven designs for all major subsystems. A fiber front-end provides arbitrarily shaped pulses to the amplifier chain. A diode-pumped Nd:glass regenerative amplifier is followed by a four-pass, flashlamp- pumped rod amplifier. The regenerative amplifier produces up to 20 mJ with better than 1% RMS stability. The passively multiplexed four-pass amplifier produces up to 2 J. The final amplifier uses a 15-cm Nd:glass disk amplifier in a six-pass configuration. Over 200 J of infrared energy is produced by the disk amplifier. A KDP Type-II/Type-II frequency tripler configuration, utilizing a dual tripler, converts the 1053-nm laser output to a wavelength of 351 nm and the ultraviolet beam is image relayed to the target chamber. Output energy stability is better than 3%. Smoothing by Spectral Dispersion and polarization smoothing have been optimized to produce a highly uniform focal spot. A distributed phase plate and aspheric lens produce a farfield spot with a measured uniformity of 8.2% RMS. Custom control software collects all data and provides the operator an intuitive interface to operate and maintain the laser.
Conference Presentation
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J. Zweiback, J. Zweiback, S. F. Fochs, S. F. Fochs, J. Bromage, J. Bromage, D. Broege, D. Broege, R. Cuffney, R. Cuffney, Z. Currier, Z. Currier, C. Dorrer, C. Dorrer, B. Ehrich, B. Ehrich, J. Engler, J. Engler, M. Guardalben, M. Guardalben, N. Kephalos, N. Kephalos, J. Marozas, J. Marozas, R. Roides, R. Roides, J. Zuegel, J. Zuegel, } "100 J UV glass laser for dynamic compression research", Proc. SPIE 10082, Solid State Lasers XXVI: Technology and Devices, 100821R (17 February 2017); doi: 10.1117/12.2249523; https://doi.org/10.1117/12.2249523
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