Two super-Gaussian output resonators of orders 4 and 6 have been designed by using the inverse-propagation method for the calculation of the graded-phase feedback mirrors. The graded-phase mirrors were made by using the diamond cutting technique on a copper substrate. An increase of 40% and 50% of monomode energy extraction has been measured compared with that of a semiconfocal resonator of the same dimension in a TEA CO2 laser.
© 1992 Optical Society of America
Original Manuscript: February 19, 1992
Published: May 15, 1992
P. A. Bélanger, R. L. Lachance, and C. Paré, "Super-Gaussian output from a CO2 laser by using a graded-phase mirror resonator," Opt. Lett. 17, 739-741 (1992)