Title :
New mid IR (1.5-2.2 μm) Raman lasers based on barium tungstate and barium nitrate crystals for pumping of pulsed mid IR (2.5-2.7 μm) tunable ZnSe:Cr2+ and CdSe:Cr2+ lasers
Author :
Basiev, T.T. ; Doroshenko, M.E. ; Osiko, V.V. ; Puzikov, V.M. ; Komar, V.K. ; Grinyov, B. ; Kosmyna, M.B.
Author_Institution :
Laser Mater. & Technol. Res. Center, Gen. Phys. Inst., Moscow, Russia
Abstract :
A series of Raman lasers based on BaWO4 and Ba(NO3)2 crystals were developed and optimized. Efficient Stokes shifted oscillations in mid IR spectral range as far as 2.2 μm were obtained with efficiency up to 10%. New methods of active Cr2+ doped crystals synthesis were developed. Efficient oscillations at 1.5 μm and 1.8 μm which are within absorption line of Cr2+ ions were used to pump ZnSe:Cr2+ (1.53 μm and 1.78 μm) and CdSe:Cr2+ (1.78 μm) lasers. Oscillations in mid IR spectral range (2.5-2.7 μm) were obtained with oscillation threshold of several hundred micro Joules and slope efficiency up to 23%.
Keywords :
Raman lasers; barium compounds; chromium; infrared spectra; laser tuning; optical materials; optical pulse generation; optical pumping; solid lasers; 1.5 to 2.7 mum; Ba(NO3)2; BaWO4; CdSe:Cr2+; Stokes shifted oscillations; ZnSe:Cr2+; barium nitrate crystals; barium tungstate crystals; mid IR Raman lasers; optical pumping; oscillation threshold; pulsed mid IR tunable CdSe:Cr2+ laser; pulsed mid IR tunable ZnSe:Cr2+ laser; slope efficiency; Barium; Crystals; Gas lasers; Laser excitation; Optical pulses; Pump lasers; Reflectivity; Solid lasers; Stimulated emission; Tunable circuits and devices;
Conference_Titel :
Advanced Optoelectronics and Lasers, 2003. Proceedings of CAOL 2003. First International Conference on
Print_ISBN :
0-7803-7948-9
DOI :
10.1109/CAOL.2003.1250526
