Nonresonant Multiple Pass Nonlinear Structure
AssigneePhotodigm, Inc.
InventorsWilliam David Bragg, Jason O'Daniel
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Abstract
A system, a structure, and a method for the generation of second harmonic light are provided. A laser system comprises a seed laser that produces a fundamental frequency light, and a nonresonant multiple pass nonlinear structure generates a second harmonic light using the fundamental frequency light. A second harmonic outcoupler outputs the second harmonic light from the laser system and a reflecting structure reflects a remaining portion of the fundamental frequency light back into the nonresonant multiple pass nonlinear structure to generate additional second harmonic light.
Claims19
A laser system comprising:
- a seed laser that produces a fundamental frequency light;
- a nonresonant multiple pass nonlinear structure which generates a second harmonic light using the fundamental frequency light;
- at least one reflecting structure that reflects a remaining portion of the fundamental frequency light from the nonresonant multiple pass nonlinear structure back into the nonresonant multiple pass nonlinear structure to generate an additional second harmonic light;
- and
- at least one second harmonic outcoupler that outputs the second harmonic light and the additional second harmonic light from the laser system.
A nonresonant structure comprising:
- a nonlinear portion, wherein the dimensions of the nonlinear portion provide for a plurality of passes of fundamental light through the nonlinear portion, each pass through the nonlinear portion comprising an instance of a light beam passing through at least a portion of the nonresonant multiple pass nonlinear structure with substantially no redirection from a reflective surface or a material boundary, and wherein second harmonic light is generated along each of the plurality of passes;
- and
- a reflecting portion, wherein the reflecting portion reflects a fundamental light from a first pass in the nonlinear portion to a second pass in the nonlinear portion.
A method of generating second harmonic light, the method comprising:
- producing a fundamental frequency beam;
- inputting the fundamental frequency beam into a nonlinear structure in a first pass, wherein a pass through the nonlinear structure comprises an instance of the fundamental frequency beam passing through at least a portion of the nonlinear structure with substantially no redirection from a reflective surface or a material boundary.
- generating a first beam of second harmonic light in the nonlinear structure from a portion of the fundamental frequency beam;
- reflecting a remaining fundamental frequency beam from the nonlinear structure into a second pass in the nonlinear structure;
- generating a second beam of second harmonic light in the nonlinear structure from a portion of the remaining fundamental beam;
- and
- outputting the first and the second beams of second harmonic light.
Dependencies are inferred from the claim text.