Current status of high-power diode laser bars for pump and direct applications

Author

Luft, J. ; Behringer, Michael ; Herrmann, Guido ; Philippens, M. ; Teich, W. ; Schmitt, A. ; Marchiano, M. ; Seibold, G.

Author_Institution

OSRAM Opto Semiconductors, Regensburg, Germany

fYear

2003

fDate

22-27 June 2003

Firstpage

144

Abstract

In this paper, the current status of high-power diode laser bars for pump and direct applications are proposed. The Nd:YAG with absorption lines at 808 nm and the Yb:YAG with absorption lines at 940 nm are actually most important for high power diode laser pump applications. Compared to flash lamp pumped solid state lasers, diode pumped systems have advantages in efficiency, lifetime and beam quality. Beside the current status of industrial bar products, top values from research labs in important laser characteristics are quite above the actual level. Today, for some material processing applications, the tapered laser structure seems to be most favourable, concerning beam quality and reproducible production.

Keywords

laser beams; laser materials processing; light absorption; neodymium; optical pumping; semiconductor lasers; ytterbium; 808 nm; 940 nm; YAG:Nd; YAG:Yb; YAl5O12:Nd; YAl5O12:Yb; absorption lines; beam quality; direct applications; high-power diode laser bars; industrial bar products; laser characteristics; laser pumping; material processing applications; solid state lasers; tapered laser structure; Absorption; Bars; Diode lasers; Lamps; Laser applications; Laser beams; Laser excitation; Materials processing; Pump lasers; Solid lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on

Print_ISBN

0-7803-7734-6

Type

conf

DOI

10.1109/CLEOE.2003.1312205

Filename

1312205