Nonlinear optical frequency conversion using metamaterial arrays
| DWPI Title: Method of nonlinear wavelength generation using nonlinear optical medium and input flux of pump energy, involves collecting beam of output light comprising converted component from multiple dielectric resonators |
| Abstract: A method of nonlinear wavelength generation uses a nonlinear optical medium. An input flux of pump energy is applied to one or more dielectric optical resonators. Each resonator has an optical cavity comprising the nonlinear optical medium. Each resonator has at least one Mie resonance that is excited by the input flux of pump energy. The pump energy causes the generation of converted light containing at least one converted component having a frequency attainable only through a non-linear process. |
| Use: Method of nonlinear wavelength generation using nonlinear optical medium and input flux of pump energy. |
| Advantage: The method enhances the conversion efficiency, and optimizes the modal overlap between two resonances. The changes can reduce absorption at the wavelength, and thus, permitting greater electromagnetic field enhancements at the wavelength, and can reduce the damage induced by two-photon absorption at larger pump powers. Dark modes van be advantageous for some applications because their resonances can exhibit very high quality factors, which can lead, in turn, to high field enhancement. The dielectric nanoresonators can also be used to greatly enhance nonlinear optical phenomena, due to the largely enhanced electromagnetic fields inside the resonators and the larger mode volume. |
| Novelty: The method involves impinging the input beam onto multiple dielectric optical resonators, each having an optical cavity with the nonlinear optical medium, and thus to generate converted light containing converted component with a frequency attainable only through a non-linear process. A beam of output light comprising the converted component is collected from the dielectric resonators. Each of the dielectric optical resonators is provided with Mie resonance that is excited by the input beam. The Mie resonance of each of the dielectric optical resonators is excited by the input beam. The generated converted light comprises a process of harmonic generation, and the converted component comprises a second harmonic of the input beam frequency. |
| Filed: 6/15/2017 |
| Application Number: US15624478A |
| Tech ID: SD 13686.1 |
| 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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