Abstract

Harmonic generation has seen many applications since its discovery in 1961.¹ The simple theories of harmonic generation assume that the incident radiation is monochromatic,² and in fact most schemes for producing high efficiency harmonic generation involve the use of single mode or at least narrowband lasers.^3,4 When using broad-band input fields, the efficiency of the harmonic generation process has been shown to decrease when using the conventional configuration for harmonic generation,⁵ Many applications of harmonic generation, however, involve the use of a broadband input laser, generally requiring the use of thinner cyrstals at the expense of decreased conversion efficiency or increased input intensities.

© 1989 Optical Society of America