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AssigneeEastman Kodak Company
InventorsJohn A. Agostinelli, Mool C. Gupta, Jose M. Mir
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A frequency converter/mixer has a crystalline substrate which supports an inorganic, crystalline, nonlinear optical thin film having a higher index of refraction than the substrate, to form an optical waveguide. Input radiation of frequency .omega..sub.1 which enters the waveguide propagates through the waveguide and exits as radiation having a different frequency .omega..sub.2. The frequency conversion of the input radiation is accomplished by first-order quasi-phase-matching the input and output signals as a result of the periodicity of the sign-alternating nonlinear dielectric susceptibility coefficient of the optical thin film over an active region of the waveguide. A method of first-order quasi-phase-matching is also disclosed.
A device for producing an output signal having frequency f.sub.out from at least one input signal having a frequency f.sub.in n, wherein f.sub.in n is different from f.sub.out, comprising:
A method for making an optical device for converting an input signal having a fundamental frequency f.sub.1 into an output signal having a converted frequency f.sub.2, comprising the steps of:
Dependencies are inferred from the claim text.