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US Patent 4811349 - Cr3+ -doped colquiriite solid state laser material
US Patent Issued on March 7, 1989
Estimated Patent Expiration Date:
March 31, 2008Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 31, 2008Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractChromium doped colquiriite, LiCaAlF6 :Cr3+, 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 Cr3+ 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 Nd3+ or Tm3+ for use in a multimegajoule single shot fusion research facility. | InventorsAssigneeApplicationNo. 07/176014 filed on 03/31/1988US Classes:372/41, Insulating crystal372/39PARTICULAR ACTIVE MEDIAField of Search372/39, PARTICULAR ACTIVE MEDIA372/40, Amorphous (e.g., glass)372/41Insulating crystalExaminersPrimary: Sikes, William L.Assistant: Randolph, B. Attorney, Agent or FirmUS Patent References3997853, Chromium-doped beryllium aluminate lasersIssued on: 12/14/1976 Inventor: Morris , et al.4272733, Broadly tunable chromium-doped beryllium aluminate lasers and operation thereof Issued on: 06/09/1981 Inventor: Walling , et al.4377864, Chromium (III) ordered perovskite lasers and media therefor Issued on: 03/22/1983 Inventor: McCollum , et al.4490822, Cr-Doped yttrium gallium garnet laser Issued on: 12/25/1984 Inventor: Walling , et al.4599727Strontium aluminum fluoride laser Issued on: 07/08/1986 Inventor: Jenssen International ClassesC30B 13/00 (20060101)H01S 3/16 (20060101) |
