25%Eu : KGd(WO{sub 4}){sub 2} laser crystal: spectroscopy and lasing on the {sup 5}D{sub 0}{yields}{sup 7}F{sub 4} transition

25%Eu : KGd(WO{sub 4}){sub 2} crystal is grown by a modified Czochralski method and its spectral and lasing properties are studied. Generation of stimulated emission in this crystal on the {sup 5}D{sub 0}{yields}{sup 7}F{sub 4} transition of the Eu{sup 3+} ion is obtained, as far as we know, for the...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2011-03, Vol.41 (3)
Main Authors: Bagaev, Sergei N, Dashkevich, V I, Orlovich, Valentin A, Vatnik, S M, Pavlyuk, A A, Yurkin, A M
Format: Article
Language:English
Subjects:
ABSORPTION
CHARGED PARTICLES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL GROWTH METHODS
CRYSTALS
CZOCHRALSKI METHOD
EMISSION
ENERGY-LEVEL TRANSITIONS
EUROPIUM IONS
IONS
LASERS
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SORPTION
SPECTROSCOPY
STIMULATED EMISSION
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS
WAVELENGTHS
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Summary:25%Eu : KGd(WO{sub 4}){sub 2} crystal is grown by a modified Czochralski method and its spectral and lasing properties are studied. Generation of stimulated emission in this crystal on the {sup 5}D{sub 0}{yields}{sup 7}F{sub 4} transition of the Eu{sup 3+} ion is obtained, as far as we know, for the first time. The laser operates at room temperature at a wavelength of {approx}703 nm under pumping into the {sup 7}F{sub 0}{yields}{sup 5}D{sub 1} absorption band of the europium ion by the second harmonic of a Q-switched Nd : KGW laser ({lambda}{sub pump}= 533.6 nm). With a 9.4-mm-long active element, the output energy in the free-running regime reached 244 {mu}J, while the optical efficiency was 1.5%. (lasers and active media)
ISSN:1063-7818
DOI:10.1070/QE2011V041N03ABEH014495