Title :
Laser pumping of Ho-, Tm-, Er-doped garnet lasers at room temperature
Author :
Huber, G. ; Duczynski, E.W. ; Petermann, Klaus
Author_Institution :
Inst. fuer Angewandte Phys., Hamburg Univ., West Germany
fDate :
6/1/1988 12:00:00 AM
Abstract :
Laser pumping of Ho-, Tm-, and Er-doped garnets at room temperature is reviewed. Laser pumping of Tm (1860 nm), Ho (2090 nm), Er (1650 nm, 2710 nm) is possible with argon ion, krypton ion, and dye lasers. In Tm,Ho:YAG, efficient CW laser oscillation at 300 K is achieved under diode laser pumping. Er and Tm garnets might be pumped with diode lasers too. The highest slope efficiency of 41% is observed in Cr,Tm,Ho:YSGG under krypton laser pumping, demonstrating the efficient downconversion in this material. Red pump light is converted to the infrared spectral region at a quantum efficiency of nearly 2.<>
Keywords :
erbium; holmium; optical pumping; solid lasers; thulium; 1650 nm; 1860 nm; 2090 nm; 2710 nm; 300 K; Ar ion laser; Cr,Tm,Ho:YSGG; Er-doped garnet lasers; Ho doped garnet laser; Kr ion laser; Tm doped garnet laser; Tm,Ho:YAG; YAG:Tm,Ho; YAl5O12:Tm,Ho; YScGG:Cr,Tm,Ho; YScGa5O12:Cr,Tm,Ho; diode laser pumping; dye lasers; efficient CW laser oscillation; efficient downconversion; infrared spectral region; laser pumping; quantum efficiency; red pump light; room temperature; Absorption; Chromium; Crystals; Diode lasers; Erbium; Garnets; Laser excitation; Laser transitions; Pump lasers; Temperature;
Journal_Title :
Quantum Electronics, IEEE Journal of
