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Growth, properties and Raman shift laser in tungstate crystals
- Source :
- Journal of Crystal Growth. 292:377-380
- Publication Year :
- 2006
- Publisher :
- Elsevier BV, 2006.
-
Abstract
- Tungstate crystals including potassium rare earth metal double tungstates KRE(WO 4 ) 2 and barium tungstate BaWO 4 are reliable and efficient Raman active crystals. In this paper, we report on the growth, physical properties and laser performance of these crystals. The pump threshold of Nd: KLu(WO 4 ) 2 pumped by a laser diode (LD) is 24 mW, and up to 188.3 mW of cw output at 1.073 μm is obtained with 746 mW pump power. The optical conversion efficiency is 25.3%, and the slope efficiency of the laser is 26.1%. The cw output for Yb:KLu(WO 4 ) 2 at 1.03 μm is 3.4 W pumped by an LD. Below 0.25 mJ pump energy, we obtained 0.07 mJ Raman laser output in the yellow (the first Stokes line at 559.7 nm) and the orange (the second Stokes line at 590.3 nm) with a 30-mm-long c -axis-oriented BaWO 4 crystal. The conversion efficiency of the Raman laser is about 28%.
- Subjects :
- Laser diode
Chemistry
business.industry
Slope efficiency
Energy conversion efficiency
Analytical chemistry
Stokes line
Condensed Matter Physics
Laser
law.invention
Inorganic Chemistry
chemistry.chemical_compound
symbols.namesake
Optics
Raman laser
Tungstate
law
Materials Chemistry
symbols
business
Raman spectroscopy
Subjects
Details
- ISSN :
- 00220248
- Volume :
- 292
- Database :
- OpenAIRE
- Journal :
- Journal of Crystal Growth
- Accession number :
- edsair.doi...........911515e9976cc28924341d296ebc51ff