[OPTICAL REVIEW Vol. 4, No. 4 (1997) 502-506]

Anamorphic Focusing Optical System for Laser-Diode-Array

Mikihiko TERASHIMA,1 Kimiaki YAMAMOTO,1 Masanobu YAMANAKA,2 Koji ISHIKAWA,2 Masato OHMI,2 Sadao NAKAI2 and Tsuyoshi SATO3

1Advanced Technology Research Center, Olympus Optical Co., Ltd., 2-3, Kuboyama-cho, Hachioji, Tokyo, 192 Japan, 2Institute of Laser Engineering, Osaka University, 2-6, Yamada-oka, Osaka, 565 Japan, 3Kimmon Electric Co., Ltd., 750, Shimoakasaka, Kawagoe-shi, Saitama, 356 Japan

(Received April 17, 1996; Accepted May 19, 1997)

A focusing optical system for a semiconductor laser-diode-array is described. The high-power array consists of a number of minuscule light sources (quantum wells) as well as a stratified structure, so that it requires several design techniques to focus as a pumping source for a laser-diode-pumped solid state laser. Some design techniques for such a focusing system are proposed with examples of the design of an anamorphic optical system.

Key words : focusing optical system, retrofocus type, demagnifying system, magnifying system, high-power laser-diode-array, disk-type Nd:YAG laser amplifier