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Abbreviated Journal Title

J. Appl. Phys.

Keywords

Physics; Applied

Abstract

A new class of Yb-lasers is summarized in this article. The apatite family of crystals, based on the hexagonal structure of the mineral fluorapatite, has been found to impose favorable spectroscopic and laser properties on the Yb3+ activator ion. Crystals of Yb-doped Ca5(PO4)3F, Sr5(PO4)3F, CaxSr5-x(PO4)3F, and Sr5(VO4)3F 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 X 10(-20) cm2), useful emission lifetimes (0.59-1.26 ms), a strong pump band (sigma(abs)=2.0-10.0 X 10(-20) cm2), and pump and extraction wavelengths near 900 and 1045 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. A summary of the laser parameters and a discussion of the Yb:apatite class of lasers is presented.

Journal Title

Journal of Applied Physics

Volume

76

Issue/Number

1

Publication Date

1-1-1994

Document Type

Article

Language

English

First Page

497

Last Page

503

WOS Identifier

WOS:A1994NW31800072

ISSN

0021-8979

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