New ytterbium-doped apatite crystals for flexible laser design

Technical Report · Tue Mar 01 00:00:00 EST 1994

DOI:https://doi.org/10.2172/10166773· OSTI ID:10166773

Payne, S A; DeLoach, L D; Smith, L K; Krupke, W F ^[1]; Chai, B H.T.; Loutts, G ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Univ. of Central Florida, Orlando, FL (United States). Center for Research and Education in Optics and Lasers

A new class of Yb-lasers is summarized in this article. The apatite family of crystals has been found to impose favorable spectroscopic and laser properties on the Yb{sup 3+} activator ion. Crystals of Yb-doped Ca{sub 5}(PO{sub 4}){sub 3}F, Sr{sub 5}(PO{sub 4}){sub 3}F, Ca{sub x}Sr{sub 5{minus}x}(PO{sub 4}){sub 3}F, and Sr{sub 5}(VO{sub 4}){sub 3}F have been grown and investigated. Several useful laser crystals have been identified which offer a variety of fundamental laser parameters for designing diode-pumped systems. In general, this class of materials is characterized by high emission cross sections (3.6--13.1 {times} 10{sup {minus}20} cm{sup 2}), useful emission lifetimes (0.59--1.26 msec), a strong pump band ({sigma}{sub abs} = 2.0--10.0 {times} 10{sup {minus}20} cm{sup 2}) and pump and extraction wavelengths near 900 and 1,045 nm, respectively. Efficient lasing has been demonstrated for several of the members of this class of materials, and high optical quality crystals have been grown by the Czochralski method.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10166773
• Report Number(s): UCRL-JC-115149; CONF-940226-8; ON: DE94015138; TRN: AHC29416%%16
• Resource Relation: Conference: 9. advanced solid-state lasers meeting,Salt Lake City, UT (United States),7-10 Feb 1994; Other Information: PBD: Mar 1994
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SOLID STATE LASERS
LASER MATERIALS
PERFORMANCE
APATITES
OPTICAL PROPERTIES
ABSORPTION SPECTRA
EMISSION SPECTRA
YTTERBIUM
DOPED MATERIALS
CALCIUM PHOSPHATES
STRONTIUM PHOSPHATES
STRONTIUM COMPOUNDS
VANADATES
CALCIUM FLUORIDES
STRONTIUM FLUORIDES
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
426002
LASERS AND MASERS