The concept of a phase-conjugate etalon mirror consisting of one flat and one aspheric surface is introduced. This new element can be used as an end mirror of a conventional resonator to promote spatial-mode selection and mode shaping. A phase-conjugate etalon designed for the fundamental Gaussian mode is experimentally implemented and tested with a single-mode He-Ne laser.
© 2004 Optical Society of America
(070.5040) Fourier optics and signal processing : Phase conjugation
(140.3300) Lasers and laser optics : Laser beam shaping
(140.3410) Lasers and laser optics : Laser resonators
(140.3570) Lasers and laser optics : Lasers, single-mode
Zhaohui H. Yang and James R. Leger, "Properties of a Phase-Conjugate Etalon Mirror and its Application to Laser Resonator Spatial-Mode Control," Appl. Opt. 43, 4095-4099 (2004)