Design of a fiber-collimated array for beam combining

作者：Bellanger Cindy^*; Brignon Arnaud; Toulon Bruno; Primot Jerome; Bouamrane Faycal; Bouvet Thomas; Megtert Stephan; Quetel Lionel; Allain Tristan

来源：Optical Engineering, 2011, 50(2): 025005.

DOI：10.1117/1.3537968

• collimated fiber array
• beam combining
• fiber lasers

In this paper, we present the design of a very precise collimated fiber array that meets requirements for beam combining. Calculations permit to determine the tolerances toward key parameters and specify the components to manufacture. Thus, the collimated fiber array is composed of a high quality commercial microlens array and an especially dedicated fiber holder that we design and realize experimentally. Manufacture techniques for both the microlens and the holder are chosen to be collective and then compatible with a high number of fibers. With the collimated fiber array hence obtained, the individual beam quality was measured to be lambda/10 and the pointing accuracy is under 0.6 mrad.

• 出版日期2011-2