Global to push GA events into
skip to main content

Title: Optically pumped cerium-doped LiSrAlF{sub 6} and LiCaAlF{sub 6}

Ce{sup 3+}-doped LiSrAlF{sub 6} crystals are pumped by ultraviolet light which is polarized along the c axis of the crystals to effectively energize the laser system. In one embodiment, the polarized fourth harmonic light output from a conventional Nd:YAG laser operating at 266 nm is arranged to pump Ce:LiSrAlF{sub 6} with the pump light polarized along the c axis of the crystal. The Ce:LiSrAlF{sub 6} crystal may be placed in a laser cavity for generating tunable coherent ultraviolet radiation in the range of 280-320 nm. Additionally, Ce-doped crystals possessing the LiSrAlF{sub 6} type of chemical formula, e.g. Ce-doped LiCaAlF{sub 6} and LiSrGaF{sub 6}, can be used. Alternative pump sources include an ultraviolet-capable krypton or argon laser, or ultraviolet emitting flashlamps. The polarization of the pump light will impact operation. The laser system will operate efficiently when light in the 280-320 nm gain region is injected or recirculated in the system such that the beam is also polarized along the c axis of the crystal. The Ce:LiSrAlF{sub 6} laser system can be configured to generate ultrashort pulses, and it may be used to pump other devices, such as an optical parametric oscillator. 10 figs.
Inventors:
; ;
Issue Date:
OSTI Identifier:
228054
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 426002; PA: EDB-96:081013; SN: 96001584028
Patent Number(s):
US 5,517,516/A/
Application Number:
PAN: 8-184,944
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 14 May 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; SOLID STATE LASERS; OPTICAL PUMPING; LASER MATERIALS; CERIUM IONS; DOPED MATERIALS; LITHIUM FLUORIDES; STRONTIUM FLUORIDES; ALUMINIUM FLUORIDES; ULTRAVIOLET RADIATION; NEODYMIUM LASERS; CALCIUM FLUORIDES; GALLIUM FLUORIDES; ELECTROMAGNETIC PULSES