Abstract

Hollow cones of second-harmonic light may, under certain conditions, be produced in nonlinear crystals in the process of optical second-harmonic generation. This effect is caused by the mixing of the central laser beam with a weak off-axis radiation field of the same frequency. Under these conditions noncollinear phase matching (NPM) occurs in a locus of directions defining a hollow cone. Equations have been developed describing NPM in negative uniaxial crystals, and the NPM hypothesis has been verified experimentally. A technique is described for characterizing the phase-matching properties of materials based on this result.

© 1971 Optical Society of America

Analysis of noncollinear-phase-matching effects in uniaxial crystals*

Harry E. Bates
J. Opt. Soc. Am. 63(2) 146-151 (1973)

Phase-Shift Measurement of Evanescent Electromagnetic Waves*

C. K. Carniglia and L. Mandel
J. Opt. Soc. Am. 61(8) 1035-1043 (1971)

Biaxial Crystal Optics*

Jin Au Kong
J. Opt. Soc. Am. 61(1) 49-52 (1971)

Phase-Only Complex-Valued Spatial Filter*

Joseph P. Kirk and Alan L. Jones
J. Opt. Soc. Am. 61(8) 1023-1028 (1971)

Lateral Displacement of Optical Beams at Multilayered and Periodic Structures*

T. Tamir and H. L. Bertoni
J. Opt. Soc. Am. 61(10) 1397-1413 (1971)