Cr.sup.3+ -doped colquiriite solid state laser material

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:866869

Payne, Stephen A ^[1]; Chase, Lloyd L ^[2]; Newkirk, Herbert W ^[2]; Krupke, William F ^[3]

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1. Castro Valley, CA
2. Livermore, CA
3. Pleasanton, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4811349
• OSTI ID: 866869
• Country of Publication: United States
• Language: English

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