Patent ID: 6636343
Filing Date: 2003-10-21
Classification: G02F

Abstract:
An optical system for multiplying a light ray frequency, comprising:a nonlinear optical medium having: a negative birefringence; a plane face for receiving a broadband light beam, wherein said broadband light beam comprises a plurality of light rays each having a discrete frequency and corresponding wavelength, and a type p polarization; and an optimum entrance angle for every wavelength of light, said optimum entrance angle varying as a high order polynomial function of said light wavelength, said optimum entrance angle an incidence angle measured with respect to a normal to said plane face; and a plurality of optical means for dispersing said broadband light beam into a plurality of said light rays, and for subsequently realigning said light rays such that each said light ray enters said plane face at an angle which matches said optimum entrance angle for said light ray wavelength to at least a third order of said high order polynomial function.