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1 June 2004 Intracavity adaptive correction of a 10-kW solid state heat-capacity laser
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Proceedings Volume 5333, Laser Resonators and Beam Control VII; (2004)
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States
The Solid-State, Heat-Capacity Laser (SSHCL), under development at Lawrence Livermore National Laboratory (LLNL) is a large aperture (100 cm2), confocal, unstable resonator requiring near-diffraction-limited beam quality. There are two primary sources of the aberrations in the system: residual, static aberrations from the fabrication of the optical components and predictable, time-dependent, thermally-induced index gradients within the gain medium. A deformable mirror placed within the cavity is used to correct the aberrations that are sensed with a Shack-Hartmann wavefront sensor. Although it is more challenging than external correction, intracavity correction enables control of the mode growth within the resonator, resulting in the ability to correct a more aberrated system longer. The overall system design, measurement techniques and correction algorithms are discussed. Experimental results from initial correction of the static aberrations and dynamic correction of the time-dependent aberrations are presented.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kai N. LaFortune, Randall L. Hurd, Erik M. Johansson, Clifford Brent Dane, Scott N. Fochs, and James M. Brase "Intracavity adaptive correction of a 10-kW solid state heat-capacity laser", Proc. SPIE 5333, Laser Resonators and Beam Control VII, (1 June 2004);

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