Title :
Characterization of high power multimode combiners
Author :
Geiger, Jens ; Erben, Benjamin ; Hoffmann, Dieter ; Altmeyer, Stefan
Author_Institution :
Fraunhofer Inst. For Laser Technol., Aachen
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;
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
DOI :
10.1109/CLEOE-IQEC.2007.4386476
