High-Quality, 4 ×6 cm2, Yb: S-FAP [Yb3+:Sr5(PO4)3F] Crystal Slabs for the Mercury Laser

K. I. Schaffers; J. B. Tassano; A.J. Bayramian; J. W. Dawson; C. Bibeau; S.A. Payne; R. C. Morris; M. H. Randles; A. DeWald; J. Rankin; M. R. Hill

doi:10.1364/ASSP.2003.273

Advanced Solid-State Photonics
OSA Trends in Optics and Photonics (Optica Publishing Group, 2003),
paper 273
•https://doi.org/10.1364/ASSP.2003.273

High-Quality, 4 ×6 cm², Yb: S-FAP [Yb³⁺:Sr₅(PO₄)₃F] Crystal Slabs for the Mercury Laser

K. I. Schaffers, J. B. Tassano, A.J. Bayramian, J. W. Dawson, C. Bibeau, S.A. Payne, R. C. Morris, M. H. Randles, A. DeWald, J. Rankin, and M. R. Hill

Advanced Solid-State Photonics 2003

San Antonio, Texas United States
2–5 February 2003
ISBN: 1-55752-743-1

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Ultra-High Power Lasers (UHPL)

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K. I. Schaffers, J. B. Tassano, A. J. Bayramian, J. W. Dawson, C. Bibeau, S. A. Payne, R. C. Morris, M. H. Randles, A. DeWald, J. Rankin, and M. R. Hill, "High-Quality, 4 ×6 cm2, Yb: S-FAP [Yb3+:Sr5(PO4)3F] Crystal Slabs for the Mercury Laser," in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optica Publishing Group, 2003), paper 273.

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Abstract

The growth of Yb: S-FAP [Yb³⁺:Sr₅(PO₄)₃F] crystals is being developed for use as the gain medium in the Mercury Laser, a gas-cooled amplifier system intended to yield 100J, 10Hz and 10% efficiency in 3 nsec when completed, for inertial fusion energy. A number of defect issues have been overcome to produce high quality crystals, including: cloudiness, bubble core defects, anomalous absorption, low-angle grain boundaries, cracking, and crystal inclusions. Currently useful crystals are routinely produced for fabrication into full size slabs. However, stress cracking during fabrication is being addressed as a critical issue in producing the 14 slabs necessary for full activation of the Mercury Laser.

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