Title :
The study of a Tm:YbAG laser pumped at 1678 nm
Author :
Zavartsev, Yu.D. ; Zagumennyi, A.I. ; Kalachev, Yu.L. ; Kutovoi, S.A. ; Mikhailov, V.A. ; Scherbakov, I.A.
Author_Institution :
GPI, Prokhorov´s Gen. Phys. Inst., Moscow, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
The laser crystal Tm3+:Yb3Al5O12 (Tm:YbAG) was grown by the Czochralski method and was investigated under pumping by a Raman-shifted erbium fiber laser at a wavelength of 1.678 um. Absorbance and luminescence spectra were recorded and the luminescence lifetime of the upper lasing level 3F4 was measured to be 4,7 ms. Lasing of this crystal at a wavelength of 2.02 um was obtained for the first time. The laser slope efficiency reached 41% at the output power up to 330 mW at room temperature.
Keywords :
crystal growth from melt; fibre lasers; optical pumping; photoluminescence; solid lasers; thulium; ytterbium compounds; Czochralski method; Raman-shifted erbium fiber laser; Tm:YbAG laser; YbAG:Tm; absorbance spectra; laser crystal; laser slope efficiency; luminescence lifetime; luminescence spectra; optical pumping; output power; power 330 mW; room temperature; temperature 293 K to 298 K; upper lasing level 3F4; wavelength 1.678 mum; wavelength 2.02 mum; Crystals; Ions; Laser excitation; Luminescence; Measurement by laser beam; Pump lasers; Tm3+; Yb3Al5O12; YbAG; laser; laser pumping;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886239
