[OPTICAL REVIEW Vol. 19, No. 3 (2012) 150-153]
© 2012 The Japan Society of Applied Physics

Silica-Taper Array for Beam Shaping of High Power Laser Diode Bar

Chu LIU1,2,3*, Fan ZHANG1,2, Chuncan WANG1,2, Yuchun LU1,2, Rui GENG4, and Shuisheng JIAN1,2

1Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China 2Key Lab of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China 3China Unicom Research Institute, Beijing 100140, China 4School of Instrument Science and Optoelectronic Engineering, Beijing Information Science and Technology University, Beijing 100192, China

(Received December 12, 2011; Accepted January 13, 2012)

A low-cost, easy producing and novel beam shaping system for concentration and homogenization of a high power laser diode bar (LDB) beam is demonstrated by experiment and simulation. It consists of a silica-taper array (beam shaper) and a silica-taper (beam integrator) which are fabricated by using chemical etching technique. By using this device, the output beam of LDB is reshaped to a small spot with uniform intensity and angular distributions, and could be coupled into a 200 μm silica fiber.

Key words: laser diode bar, beam shaping

*E-mail address: 07111018@bjtu.edu.cn