We consider noncollinear interaction among three amplitude-modulated plane waves in a uniaxial crystal under type I phase-matching conditions. If one among the interacting fields can be taken as undepleted during the interaction, the remaining two fields are holographic replicas of each other: the undepleted field acts as the reference field in holography. We develop a general method to calculate the holographic wave front generated by a nonplane object wave front and a plane reference wave front. We present experiments in which a holographic image of an object consisting of a pointlike light source is obtained by choosing the object- and reference-field frequencies among ω<sub>1</sub>, ω<sub>2</sub>, and ω<sub>3</sub> (with ω<sub>3</sub>=ω<sub>1</sub>+ω<sub>2</sub>) in any of the possible combinations.
© 2003 Optical Society of America
Maria Bondani, Alessia Allevi, and Alessandra Andreoni, "Holography by nondegenerate χ(2) interactions," J. Opt. Soc. Am. B 20, 1-13 (2003)