Thermal and laser conditioning of production- and rapid-growth KDP and KD*P crystals
Large solid state lasers such as Beamlet and the proposed National Ignition Facility (NIF) require optical materials with extremely high damage thresholds. Potassium dihydrogen phosphate (KDP) and its deuterated analog (KD*P) both require some form of conditioning to reach the design fluence of these lasers. Both the bulk material and the crystal surfaces must have damage thresholds in excess of 16J/cm{sup 2} at 1053 nm and 11J/cm{sup 2} at 351 nm for 3-ns pulselengths. The use of ultrafiltration techniques has been demonstrated to produce bulk material with damage thresholds exceeding these requirements with the use of R:1 laser conditioning. More recent results at LLNL using large-area laser conditioning and thermal annealing are described for a variety of state-of-the-art KDP and KD*P crystals. Results on thermally annealed KD*P with a deuteration range of 60% to 80% are also presented, and compared to those of ordinary KDP.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10159927
- Report Number(s):
- UCRL-JC-115121; CONF-931054-11; ON: DE94013738
- Resource Relation:
- Conference: 25. Boulder damage symposium: annual symposium on optical materials for high-power lasers,Boulder, CO (United States),27-29 Oct 1993; Other Information: PBD: 13 Jan 1994
- Country of Publication:
- United States
- Language:
- English
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