946-nm Nd:YAG laser under direct diode-pumping at 869 nm

Author

Bjurshagen, S. ; Laurell, F. ; Koch, R. ; Hoffman, H.J.

Author_Institution

Dept. of Phys., R. Inst. of Technol., Stockholm, Sweden

fYear

2005

fDate

12-17 June 2005

Firstpage

9

Abstract

We present investigations on resonant pumping at 869 nm into the upper laser level of end-pumped Nd:YAG lasers operating on the ⁴F₃2/→⁴I₉2/ transition at 946 nm. We used a 5 mm long Nd:YAG crystal with a doping level of 0.7 at% and measured the absorption of the diode laser light at 869 nm. We set up a pump optics with two AR-coated plano-convex aspherical lenses and a two-mirror-cavity with a plane in-coupling mirror. This mirror gave a small fundamental laser mode size with lower threshold and higher output power.

Keywords

aspherical optics; laser cavity resonators; laser mirrors; laser modes; lenses; neodymium; optical materials; optical pumping; solid lasers; 5 mm; 869 nm; 946 nm; Nd:YAG laser; YAG:Nd; YAl5O12:Nd; antireflection-coated plano-convex aspherical lens; diode laser light; direct diode-pumping; doping level; end-pumped laser; laser crystal; laser mode size; laser power; plane in-coupling mirror; pump optics; resonant pumping; two-mirror-cavity; upper laser level; Absorption; Diode lasers; Doping; Laser excitation; Laser transitions; Lenses; Mirrors; Optical pumping; Pump lasers; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on

Print_ISBN

0-7803-8974-3

Type

conf

DOI

10.1109/CLEOE.2005.1567798

Filename

1567798