DocumentCode :
67530
Title :
Thermal-Lens-Driven Effects in 
-Cut Yb-and Tm-Doped Monoclinic KLu(WO4)2 Crystals
Author :
Loiko, P.A. ; Mateos, Xavier ; Kuleshov, N.V. ; Pavlyuk, A.A. ; Yumashev, K.V. ; Petrov, Valentin ; Griebner, Uwe ; Aguilo, Magdalena ; Diaz, Francesc
Author_Institution :
Center for Opt. Mater. & Technol., Belarusian Nat. Tech. Univ., Minsk, Belarus
Volume :
50
Issue :
8
fYear :
2014
fDate :
Aug. 2014
Firstpage :
669
Lastpage :
676
Abstract :
The potential of Ng-cut monoclinic Yb: and Tm:KLu(WO4)2 laser crystals is analyzed from the point of view of thermal lensing, including athermal behavior, unique laser mode stabilization by polarization-switching and potential for microchip operation. To this aim, we characterize dispersion and direction dependence of the generalized thermo-optic coefficients, A, for the light polarizations, E∥Nm and Np, and calculate sensitivity factors of the thermal lens for wide range of experimental conditions, including crystal temperature, laser wavelength, pump spot radius, as well as their relation to probe beam measurements. The polarization-switching between Nm and Np oscillating states is realized for a Tm:KLu(WO4)2 crystal and explained on the basis of spectroscopic properties, mode-matching and cavity stability. The thermal lens properties for microchip Tm:KLu(WO4)2 laser are also calculated.
Keywords :
laser cavity resonators; laser modes; laser stability; light polarisation; lutetium compounds; microchip lasers; optical dispersion; optical materials; optical pumping; optical switches; potassium compounds; thermal lensing; thulium; ytterbium; KLu(WO4)2:Tm; KLu(WO4)2:Yb; Ng-cut monoclinic laser crystals; athermal behavior; cavity stability; crystal temperature; direction dependence; dispersion dependence; laser mode stabilization; laser wavelength; light polarization; microchip laser; microchip operation; mode-matching; oscillating states; polarization-switching; probe beam measurements; pump spot radius; spectroscopic properties; thermal-lens-driven effects; thermo-optic coefficients; Crystals; Laser excitation; Laser modes; Lenses; Measurement by laser beam; Pump lasers; Thermal lensing; Diode-pumped solid-state lasers; Tm laser; Yb laser; double tungstate lasers; thermal-lens;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.2014.2332496
Filename :
6842638
Link To Document :
