Abstract

A method of processing optical information is described in which the use of absorptive spatial filters is replaced by suitable mirrors with spatially varying reflectances. When these mirrors are made the terminal planes of a laser resonator, the light which is lost in conventional spatial filtering systems, is stored in the laser cavity. It is shown that shallowly modulated phase objects may be imaged outside the resonator without any appreciable effect on the modes of the resonator.

© 1967 Optical Society of America

Reactive Optical Information Processing. II: Factors Affecting the Applicability and Efficiency of the Method

H. Wieder and R. V. Pole
Appl. Opt. 6(10) 1761-1765 (1967)

Dihedral Optical Resonators and Prism Beam Waveguides

Walter K. Kahn
Appl. Opt. 6(5) 865-872 (1967)

Improvement of Two-Dimensional Image Quality in Coherent Optical Systems

Juris Upatnieks
Appl. Opt. 6(11) 1905-1910 (1967)

Transverse Mode Structure in Unstable Optical Cavities

D. C. Sinclair and T. H. E. Cottrell
Appl. Opt. 6(5) 845-849 (1967)

Optical Resonators in the Unstable Region

S. R. Barone
Appl. Opt. 6(5) 861-863 (1967)