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

Volume

30

Issue

4

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

913

Lastpage

917

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.291362

Filename

291362