Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab | Zendy

Toshitsugu Uesugi | Zendy; Bong-Shik Song | Zendy; Takashi Asano | Zendy; Susumu Noda | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Investigation of optical nonlinearities in an ultra-high-Q Si nanocavity in a two-dimensional photonic crystal slab

Author(s) -

Toshitsugu Uesugi,

Bong-Shik Song,

Takashi Asano,

Susumu Noda

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.14.000377

Subject(s) - photonic crystal , optics , materials science , absorption (acoustics) , slab , kerr effect , optoelectronics , wavelength , free carrier absorption , nonlinear optics , two photon absorption , optical power , q factor , coupled mode theory , refractive index , nonlinear system , physics , resonator , laser , quantum mechanics , geophysics

We investigated the characteristics of an ultra-high-Q photonic nanocavity (Q = ~230,000 and modal volume = ~1.2 cubic wavelengths) at various input light powers. The cavity characteristics were red-shifted as the input power increased. This nonlinearity could be explained by coupled-mode theory, taking into account two-photon absorption, the associated free-carrier absorption, consequent free-carrier absorption, plasma effect, thermo-optic effect, and a Kerr effect. Nonlinear cavity characteristics were observed at an extremely low input light power of 10 muW. We confirmed that these low-power nonlinear optical effects could be attributed to the ultra-high Q factor of the nanocavity.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research