Spectroscopic properties and efficient diode-pumped laser operation of neodymium-doped lanthanum scandium borate

Spectroscopic properties and efficient diode-pumped laser operation of neodymium-doped lanthanum scandium borate

We report on the spectroscopic properties and laser performance of Czochralski-grown LaSc/sub 3/(BO/sub 3/)/sub 4/ (LSB) crystals with high neodymium concentrations up to 2.5/spl middot/10/sup 21/ cm/sup -3/. The low-concentration quenching of the upper laser level of neodymium and the polarization...

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Veröffentlicht in:IEEE journal of quantum electronics 1994-04, Vol.30 (4), p.913-917
Hauptverfasser: Meyn, J.-P., Jensen, T., Huber, G.
Format: Artikel
Sprache:eng
Schlagworte:
BORATES
BORON COMPOUNDS
CRYSTAL STRUCTURE
Crystalline materials
Crystals
Diodes
DOPED MATERIALS
Doped-insulator lasers and other solid state lasers
EMISSION SPECTRA
ENGINEERING
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lanthanum
LANTHANUM COMPOUNDS
Laser excitation
LASER MATERIALS
LASERS
MATERIALS
Neodymium
NEODYMIUM LASERS
Optical materials
Optics
OXYGEN COMPOUNDS
Physics
Pump lasers
RARE EARTH COMPOUNDS
SCANDIUM COMPOUNDS
Solid lasers
SOLID STATE LASERS
SPECTRA
Spectroscopy
TRANSITION ELEMENT COMPOUNDS 426002 > Engineering-- Lasers & Masers-- (1990-)
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Zusammenfassung:We report on the spectroscopic properties and laser performance of Czochralski-grown LaSc/sub 3/(BO/sub 3/)/sub 4/ (LSB) crystals with high neodymium concentrations up to 2.5/spl middot/10/sup 21/ cm/sup -3/. The low-concentration quenching of the upper laser level of neodymium and the polarization dependence of the spectra indicate that LaSc/sub 3/(BO/sub 3/)/sub 4/ crystalizes in a huntite-type structure like Nd/sup 3+/:YAl/sub 3/(BO/sub 3/)/sub 4/ (NYAB). With diode laser pumping at 808 nm, a multimode Nd/sup 3+/:LaSc/sub 3/(BO/sub 3/)/sub 4/ (NLSB) laser at 1063 nm is demonstrated. Optical slope efficiency was 64% with respect to absorbed pump power. The possibility of second-harmonic generation in the laser crystal is discussed.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.291362