From SHG to mid-infrared SPDC generation in strained silicon waveguides

被引：3

作者：

Castellan, Claudio ^{[1
]}

Trenti, Alessandro ^{[1
]}

Mancinelli, Mattia ^{[1
,2
]}

Marchesini, Alessandro ^{[1
]}

Ghulinyan, Mher ^{[3
]}

Pucker, Georg ^{[3
]}

Pavesi, Lorenzo ^{[1
]}

机构：

[1] Univ Trento, Dept Phys, Nanosci Lab, Via Sommarive 14, I-38123 Trento, Italy

[2] SM Opt Srl, Res Programs, Via John Fitzgerald Kennedy 2, I-20871 Vimercate, Italy

[3] Fdn Bruno Kessler, Ctr Mat & Microsyst, Via Sommarive 18, I-38123 Trento, Italy

来源：

QUANTUM PHOTONIC DEVICES | 2017年 / 10358卷

关键词：

Second Harmonic Generation in strained silicon waveguides; Spontaneous Parametric Down Conversion in strained silicon waveguides; Nonlinear optics in silicon; Generation of mid-infrared entangled photons; Strained silicon; Second order nonlinear optical processes in silicon; SHG in silicon; Mid-infrared SPDC in silicon; 2ND-HARMONIC GENERATION;

D O I：

10.1117/12.2273641

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The centrosymmetric crystalline structure of Silicon inhibits second order nonlinear optical processes in this material. We report here that, by breaking the silicon symmetry with a stressing silicon nitride over-layer, Second Harmonic Generation (SHG) is obtained in suitably designed waveguides where multi-modal phase-matching is achieved. The modeling of the generated signal provides an effective strain-induced second order nonlinear coefficient of chi((2)) = (0.30 +/- 0.02) pm/V. Our work opens also interesting perspectives on the reverse process, the Spontaneous Parametric Down Conversion (SPDC), through which it is possible to generate mid-infrared entangled photon pairs.

引用

页数：6

共 17 条

[1]

[Anonymous], 2006, Nonlinear Optics

[2] On the measurement of the Pockels effect in strained silicon [J].