Continuous-wave low power diode radial pumped microchip composite Yb:YAG laser

Author

Dascalu, T. ; Taira, T. ; Pavel, N. ; Aoyagi, Y. ; Saikawa, J.

Author_Institution

CREATE-JST, Japan Science and Technology Corporation, Okazaki, Japan

fYear

2002

fDate

24-24 May 2002

Firstpage

389

Abstract

Summary form only given. Recently a composite Yb:YAG microchip scheme that consists of an Yb doped core surrounded by an undoped YAG of slab or disk shape and that is radial pumped was proposed. We report first experimentally results obtained on a composite 2 at.% Yb:YAG microchip laser radially pumped by diode lasers at 941 nm. CW laser emission with 50% slope efficiency and 1.8 W maximum output power for 5.1 W absorbed power is demonstrated. This laser scheme could be scaled in power by increasing the doping level and the doped volume and by decreasing the crystal´s thickness in order to improve the heat removal. Further experiments employing a 2 mm diameter 10 at.% Yb doped core, from which CW power in excess of 140 W absorbed power is expected, are under development.

Keywords

doping profiles; microchip lasers; optical pumping; ytterbium; 1.8 W; 140 W; 2 mm; 5.1 W; 941 nm; CW laser emission; CW low power diode radial pumped microchip composite Yb:YAG laser; YAG:Yb; YAl5O12:Yb; absorbed power; crystal thickness; diode laser pump; disk shape; doped volume; doping level; heat removal; maximum output power; slab shape; slope efficiency; undoped YAG region; Diodes; Equations; Geometrical optics; Laser excitation; Laser modes; Laser theory; Microchip lasers; Power lasers; Pump lasers; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Long Beach, CA, USA

Print_ISBN

1-55752-706-7

Type

conf

DOI

10.1109/CLEO.2002.1034118

Filename

1034118