Progress in New Laser Beam on Optical Beam Quality

Abstract

The historical and present research work of our group in laser beam on optical beam quality is reviewed in this paper. An invented intracavity CO 2 laser with M e 2 < 1 is presented, and the optical beam quality of beam from subwavelength aperture is investigated. Equivalent optical beam quality of quantum well laser beam is demonstrated. The progress will promote scientific development in correlative fields, also bring potential applications for optical industry.