Abstract

In high power lasers such as gas dynamic, chemical and e-beam excited systems, an unstable optical resonator has extensively been adopted to their extended gain region with using only one round trip path.¹ On the other hand, combination of these high power lasers with an optical fiber is getting quite of importance for various applications such as machinery, welding and medical uses.² Thus, it is really required to find an efficient scheme to couple the optical beam into the optical fiber from the laser oscillator efficiently. In the present paper we shall thus propose a unique hybrid type optical resonator for enabling direct coupling of the laser beam into the optical fiber, and shall theoretically analyze its application possibility CO and CO₂ laser.

© 1995 IEEE