Fabrication of nonlinear photonic crystals and their applications

Shin-ichiro Inoue; Yoshinobu Aoyagi

doi:10.1117/12.596626

25 March 2005 Fabrication of nonlinear photonic crystals and their applications

Shin-ichiro Inoue, Yoshinobu Aoyagi

Proceedings Volume 5732, Quantum Sensing and Nanophotonic Devices II; (2005) https://doi.org/10.1117/12.596626
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

The growth and overlap of research in the fields of photonic crystals (PhCs) and nonlinear optics should lead to new exciting, active functions and high-efficiency nonlinear optical applications because nonlinear optical effects in PhCs may allow for significant advances in various optical processes by using resonantly stored light and anomalous band dispersions, in combination with nonlinear optical host materials. To show the experimental and theoretical evidences of great potentials of the nonlinear PhCs for the realization of the high-efficient and very compact nonlinear optical devices and applications, we have examined the typical second- and third-order nonlinear optical responses and the photonic band structure of the nonlinear two-dimensional (2D) PhC waveguides. We have demonstrated for the first time the second harmonic generation (SHG), the sum-frequency mixing (SFM) in the ultraviolet (UV) region, and the strong enhancement of the SHG intensity originating from the photonic band resonance in this waveguide. Moreover, by probing the nonlinear optical changes of the band resonances in angle-resolved reflectivity,we have shown direct evidence that the nonlinear optical changes arising from modifications of the photonic bands by purely optical means are dominated by the dispersion nature and the group velocity of the photonic bands, which are essential for the realization of desirable nonlinear applications, such as practical all-optical switching devices with very low operational power and ultra-small dimensions. These results agree well with the bhavior predicted from band structures, indicating that the design of nonlinear optical properties of material systems is realistically possible by band dispersion and group velocity engineering.

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Shin-ichiro Inoue and Yoshinobu Aoyagi "Fabrication of nonlinear photonic crystals and their applications", Proc. SPIE 5732, Quantum Sensing and Nanophotonic Devices II, (25 March 2005); https://doi.org/10.1117/12.596626

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KEYWORDS

Nonlinear optics

Waveguides

Dispersion

Polymers

Cladding

Second-harmonic generation

Reflectivity

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