Laser & Optoelectronics Progress, Volume. 50, Issue 9, 91404(2013)
Design of Optical Resonator for Sealed-Off CO2 Laser
A novel optical resonator is proposed, so called unstable-stable coupling resonator, whose central portion acts as unstable resonator and edge portion acts approximately as stable resonator. Using Fox-Li method, the fundamental transverse modes of unstable-stable coupling resonator are computed. An optimization of the unstable-stable coupling resonator is given for a sealed-off CO2 laser with length of 1.2 m. Results show that output power of fundamental transverse mode can be increased about 2 times and central core output power on the focus plane can be increased about 1.5 times in comparison to stable resonators. And a design of unstable-stable coupling resonator is presented, which consists of a plat mirror, a spherical lens with aberration and a spherical mirror with aberration.
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Kim Yong′chol, He Ping′an. Design of Optical Resonator for Sealed-Off CO2 Laser[J]. Laser & Optoelectronics Progress, 2013, 50(9): 91404
Category: Lasers and Laser Optics
Received: Mar. 22, 2013
Accepted: --
Published Online: Aug. 8, 2013
The Author Email: Yong′chol Kim (ksa1014@163.com)