A Gaussian-reflectivity mirror resonator is proposed to achieve high-quality laser beams. To analyze the laser fields in a Gaussian-reflectivity mirror resonator, the diffraction integral equations of a Gaussian-reflectivity mirror resonator are converted to the finite-sum matrix equations. Consequently, according to the Fox–Li laser self-reproducing principle, we describe the mode fields and their losses in the proposed resonator as eigenvectors and eigenvalues of a transfer matrix. The conclusion can be drawn from the numerical results that, if a Gaussian-reflectivity mirror is adopted for a plano–concave resonator, a fundamental mode can easily be obtained from a transverse-flow CO2 laser and high-quality laser beams can be expected.
© 2006 Optical Society of America
Lasers and Laser Optics
Original Manuscript: July 7, 2005
Revised Manuscript: September 13, 2005
Manuscript Accepted: September 16, 2005
Dongxiong Ling, Junruo Chen, and Junchang Li, "Gaussian-reflectivity mirror resonator for a high-power transverse-flow CO2 laser," Appl. Opt. 45, 3158-3162 (2006)