| Abstract: An optical second-harmonic generator (or spontaneous parametric
down-converter) includes a microresonator formed of a nonlinear optical
medium. The microresonator supports at least two modes that can be phase
matched at different frequencies so that light can be converted between
them: A first resonant mode having substantially radial polarization and
a second resonant mode having substantially vertical polarization. The
first and second modes have the same radial order. The thickness of the
nonlinear medium is less than one-half the pump wavelength within the
medium. |
| Filed: 6/5/2017 |
| Application Number: 15/614105 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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