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Visible laser emission of solid state pumped LiLuF(4):Pr(3+)
Optics Express
|June 18, 2009
Summary
This study details the growth and laser performance of Lithium Lutetium Fluoride doped with Praseodymium (LiLuF(4):Pr(3+)). Efficient room temperature laser emissions were achieved at multiple wavelengths using optical pumping.
Area of Science:
- Solid-state laser materials
- Rare-earth doped crystals
Background:
- Lithium Lutetium Fluoride (LiLuF4) is a promising host crystal for rare-earth ions.
- Praseodymium (Pr3+) doping offers potential for visible and near-infrared laser applications.
Purpose of the Study:
- To investigate the growth, spectroscopic properties, and laser performance of Pr3+-doped LiLuF4 crystals.
- To evaluate the potential of LiLuF4:Pr3+ as a gain medium for solid-state lasers.
Main Methods:
- Melt growth technique for LiLuF4:Pr3+ (1.25%) crystal fabrication.
- Measurement of polarized absorption and emission spectra at room temperature.
- Determination of the decay time of the Pr3+ (3)P0 manifold.
- Optical pumping using a semiconductor laser at 480 nm.
Main Results:
- Successful growth of LiLuF4:Pr3+ crystals.
- Characterization of optical properties including absorption and emission spectra.
- Measurement of fluorescence decay time.
- Demonstration of efficient room temperature laser emission at 522.8 nm, 607.25 nm, 640.17 nm, and 721.5 nm.
Conclusions:
- LiLuF4:Pr3+ is a viable material for efficient solid-state lasers.
- The demonstrated laser emissions cover important visible wavelengths.
- Optical pumping with semiconductor lasers provides an efficient excitation route.
