Coherent light generators – Particular active media – Insulating crystal
Patent
1988-03-31
1989-03-07
Sikes, William L.
Coherent light generators
Particular active media
Insulating crystal
372 39, H01S 316
Patent
active
048113492
ABSTRACT:
Chromium doped colquiriite, LiCaAlF.sub.6 :Cr.sup.3+, is useful as a tunable laser crystal that has a high intrinsic slope efficiency, comparable to or exceeding that of alexandrite, the current leading performer of vibronic sideband Cr.sup.3+ lasers. The laser output is tunable from at least 720 nm to 840 nm with a measured slop efficiency of about 60% in a Kr laser pumped laser configuration. The intrinsic slope efficiency (in the limit of large output coupling) may approach the quantum defect limited value of 83%. The high slope efficiency implies that excited state absorption (ESA) is negligible. The potential for efficiency and the tuning range of this material satisfy the requirements for a pump laser for a high density storage medium incorporating Nd.sup.3+ or Tm.sup.3+ for use in a multimegajoule single shot fusion research facility.
REFERENCES:
patent: 3997853 (1976-12-01), Morris et al.
patent: 4272733 (1981-06-01), Walling et al.
patent: 4377864 (1983-03-01), McCollum et al.
patent: 4490822 (1984-12-01), Walling et al.
patent: 4599727 (1986-07-01), Jenssen
Chase Lloyd L.
Krupke William F.
Newkirk Herbert W.
Payne Stephen A.
Carnahan L. E.
Hightower Judson R.
Randolph B.
Sartorio Henry P.
Sikes William L.
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