Green light emission in silicon through slow-light enhanced third-harmonic generation in photonic-crystal waveguides

Date

2009

Authors

Corcoran, Bill
Monat, Christelle
Grillet, Christian
Moss, David J.
Eggleton, Benjamin J.
White, Thomas
O'Faolain, Liam
Krauss, Thomas F.

Journal Title

Journal ISSN

Volume Title

Publisher

Nature Publishing Group

Abstract

Slow light has attracted significant interest recently as a potential solution for optical delay lines and time-domain optical signal processing. Perhaps even more significant is the possibility of dramatically enhancing nonlinear optical effects due to the spatial compression of optical energy. Two-dimensional silicon photonic-crystal waveguides have proven to be a powerful platform for realizing slow light, being compatible with on-chip integration and offering wide-bandwidth and dispersion-free propagation. Here, we report the slow-light enhancement of a nonlinear optical process in a two-dimensional silicon photonic-crystal waveguide. We observe visible third-harmonic-generation at a wavelength of 520nm with only a few watts of peak power, and demonstrate strong third-harmonic-generation enhancement due to the reduced group velocity of the near-infrared pump signal. This demonstrates yet another unexpected nonlinear function realized in a CMOS-compatible silicon waveguide.

Description

Keywords

Keywords: Green light emission; Nonlinear functions; Nonlinear optical effects; Nonlinear optical process; Photonic crystal waveguide; Reduced group velocities; Spatial compression; Third-harmonic generation; Harmonic generation; Optical communication; Photonic dev

Citation

Source

Nature Photonics

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1038/nphoton.2009.28

Restricted until

2037-12-31