Characterization of high power multimode combiners

Author

Geiger, Jens ; Erben, Benjamin ; Hoffmann, Dieter ; Altmeyer, Stefan

Author_Institution

Fraunhofer Inst. For Laser Technol., Aachen

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

In this investigation, a 1.5 W Nd:YAG laser with good beam quality is utilized to characterize the output numerical aperture (NA) of the multimode combiners with reference to the input NA. The transmission of the combiners, being one of the factors to define the brightness, is also measured when the light is coupled in with a 0.15 NA. Hence, commercially available couplers are characterized for the first time according to brightness conservation and tested up to a power level of more than 580 W of coupled power.

Keywords

brightness; laser beam applications; optical fibre couplers; optical fibre testing; Nd:YAG laser; YAG:Nd; beam quality; brightness conservation; commercial couplers; high power combiners; multimode combiners; numerical aperture; optical fiber; power 1.5 W; power 580 W; transmission measurement; Brightness; Fiber lasers; Laser beams; Laser excitation; Laser theory; Optical coupling; Optical fiber couplers; Power lasers; Pump lasers; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4386476

Filename

4386476