期刊
NANO LETTERS
卷 11, 期 7, 页码 3022-3025出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl201743x
关键词
Semiconductor nanowires; subwavelength waveguides; second harmonic generation; optical parametric generation; all-optical switching
类别
资金
- Creative Research Initiatives of NRF/MEST [2011-0000419]
The realization of nonlinear photonic circuits to achieve the control of light-by-light is contingent upon a strong nonlinear response that can be captured in a guided-wave geometry. There remains a need to further scale down waveguides while maintaining a strong nonlinear response. In this study, we report second-harmonic generation and optical parametric generation using the second-order nonlinear response in an 80 nm thick CdS nanowire subwavelength waveguide. Moreover, our three-dimensional finite-difference time-domain (FDTD) simulations demonstrate that it is possible to enhance the coherence length due to the very nature of the subwavelength geometry. Nonlinear mixing in a nanowire subwavelength waveguide represents an advance toward all-optical processing and all-optical switching in integrated photonic circuits.
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