Efficient continuous-wave nonlinear frequency conversion in high-Q gallium nitride photonic crystal cavities on silicon

被引：45

作者：

Mohamed, Mohamed Sabry ^{[1
]}

Simbula, Angelica ^{[2
]}

Carlin, Jean-Francois ^{[1
]}

Minkov, Momchil ^{[1
,3
]}

Gerace, Dario ^{[2
]}

Savona, Vincenzo ^{[1
]}

Grandjean, Nicolas ^{[1
]}

Galli, Matteo ^{[2
]}

Houdre, Romuald ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland

[2] Univ Pavia, Dipartimento Fis, Via Bassi 6, I-27100 Pavia, Italy

[3] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA

来源：

APL PHOTONICS | 2017年 / 2卷 / 03期

基金：

瑞士国家科学基金会;

关键词：

2ND-HARMONIC GENERATION; QUALITY FACTOR; MICROCAVITIES; OPTIMIZATION; NANOCAVITY;

D O I：

10.1063/1.4974311

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on nonlinear frequency conversion from the telecom range via second harmonic generation (SHG) and third harmonic generation (THG) in suspended gallium nitride slab photonic crystal (PhC) cavities on silicon, under continuous-wave resonant excitation. Optimized two-dimensional PhC cavities with augmented far-field coupling have been characterized with quality factors as high as 4.4 x 10(4), approaching the computed theoretical values. The strong enhancement in light confinement has enabled efficient SHG, achieving a normalized conversion efficiency of 2.4 x 10(-3) W-1, as well as simultaneous THG. SHG emission power of up to 0.74 nW has been detected without saturation. The results herein validate the suitability of gallium nitride for integrated nonlinear optical processing. (C) 2017 Author(s).

引用

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