Title :
Spectroscopic properties and efficient diode-pumped laser operation of neodymium-doped lanthanum scandium borate
Author :
Meyn, Jan-Peter ; Jensen, Thomas ; Huber, Gunter
Author_Institution :
Inst. fur Laser-Phys., Hamburg Univ., Germany
fDate :
4/1/1994 12:00:00 AM
Abstract :
We report on the spectroscopic properties and laser performance of Czochralski-grown LaSc3(BO3)4 (LSB) crystals with high neodymium concentrations up to 2.5·1021 cm-3. The low-concentration quenching of the upper laser level of neodymium and the polarization dependence of the spectra indicate that LaSc3(BO3)4 crystalizes in a huntite-type structure like Nd3+:YAl3(BO3)4 (NYAB). With diode laser pumping at 808 nm, a multimode Nd3+:LaSc3 (BO3)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
Keywords :
crystal growth from melt; fluorescence; impurity and defect absorption spectra of inorganic solids; lanthanum compounds; laser transitions; light polarisation; luminescence of inorganic solids; neodymium; optical harmonic generation; optical pumping; scandium compounds; solid lasers; 64 percent; Czochralski-grown LaSc3(BO3)4:Nd crystals; LaSc3(BO3)4:Nd; absorbed pump power; diode laser pumping; efficient diode-pumped laser operation; huntite-type structure; laser crystal; laser performance; low-concentration quenching; multimode Nd3+:LaSc3(BO3)4 laser; polarization dependence; second-harmonic generation; slope efficiency; spectroscopic properties; upper laser level; Crystalline materials; Crystals; Diodes; Lanthanum; Laser excitation; Neodymium; Optical materials; Pump lasers; Solid lasers; Spectroscopy;
Journal_Title :
Quantum Electronics, IEEE Journal of
