Optimizing doubly resonant photonic crystal cavity modes for second harmonic generation

Momchil Minkov; Vincenzo Savona

doi:10.1117/12.2058987

2 May 2014 Optimizing doubly resonant photonic crystal cavity modes for second harmonic generation

Momchil Minkov, Vincenzo Savona

Proceedings Volume 9127, Photonic Crystal Materials and Devices XI; 91270C (2014) https://doi.org/10.1117/12.2058987
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

We optimize a photonic crystal slab for the generation of second harmonic. The optimization consists in two steps. In the first step a regular photonic crystal, consisting in a triangular lattice of circular holes in a dielectric slab, is optimized by allowing for holes of three alternating radii, with the objective of obtaining a high-frequency bandgap doubly resonant with the fundamental one. The second step consists in modeling a L3 defect cavity in such a photonic crystal where, by further varying the radii and positions of a few neighboring holes, doubly resonant modes at the fundamental and second harmonic frequencies are obtained, with maximal Q-factors and field overlap. The structure emerging from this optimization procedure has Q-factors of 3400 for the fundamental mode and of 430 for the doubly resonant one. Due to the localized nature of those modes and hence their large field overlap, efficient second-harmonic generation is expected in a material with a X⁽²⁾ non-linearity.

Citation Download Citation

Momchil Minkov and Vincenzo Savona "Optimizing doubly resonant photonic crystal cavity modes for second harmonic generation", Proc. SPIE 9127, Photonic Crystal Materials and Devices XI, 91270C (2 May 2014); https://doi.org/10.1117/12.2058987

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available