1. Dual wavelength and switchable laser operation of Pr3+:LiYF4 crystals at 523 nm and 640 nm
- Author
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G. Huber, Sebastian Muller, Nils-Owe Hansen, Klaus Petermann, and Ortwin Hellmig
- Subjects
Materials science ,Praseodymium ,business.industry ,chemistry.chemical_element ,Green-light ,Laser ,law.invention ,Wavelength ,Optics ,chemistry ,Solid-state laser ,law ,Optoelectronics ,business ,Spectroscopy ,Tunable laser ,Diode - Abstract
Solid state lasers in the visible spectral region have many possible applications like projection technology and spectroscopy [1,2]. In these fields the generation of green light is still a challenge. Recent projection devices generate green laser light by frequency doubling of near-infrared solid state laser radiation. A compact, simple, and efficient laser based projection device is not yet developed. The trivalent Pr3+ ion in the host material LiYF 4 (YLF) has several transitions at wavelengths in the visible spectral range, for example at 523 nm (green) or at 640 nm (red). Pr:YLF can be efficiently pumped by GaInN laser diodes at 444 nm (blue) [3].
- Published
- 2011