Title

Spectroscopic And Laser Investigations Of Mn5+:Sr 5(Vo4)3F

Abstract

Mn:Sr5(VO4)3F has been investigated as a laser material for operation near 1200 nm. Absorption and emission spectra are consistent with Mn5+ substitution into the distorted tetrahedral V5+ sites of this apatite crystal. Emission is almost entirely from the 1E state, resulting in a room-temperature fluorescence lifetime of 475 μs. Together with a peak stimulated emission cross section of about 1×10-19 cm2 and strong, broad absorption bands, this is attractive for lamp- or diode-pumped laser operation. However, the 1E emission makes Mn:Sr5(VO4)3F a three-level system. Laser operation has been demonstrated at room temperature, but the efficiency is lower than expected. Single-pass gain measurements and saturable absorption and fluorescence data indicate that the primary difficulty is excited-state absorption at the pump wavelength. This absorption is very broad, and is probably due to 1T1 and 1T 2 excited states. © 1995 American Institute of Physics.

Publication Date

12-1-1995

Publication Title

Journal of Applied Physics

Volume

77

Issue

2

Number of Pages

474-480

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1063/1.359585

Socpus ID

36449007213 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/36449007213

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