Enhanced second-harmonic generation from two-dimensional MoSe2 on a silicon waveguide

Light, Science & Applications
Haitao ChenDragomir Neshev

Abstract

Two-dimensional transition-metal dichalcogenides (TMDCs) with intrinsically broken crystal inversion symmetry and large second-order nonlinear responses have shown great promise for future nonlinear light sources. However, the sub-nanometer monolayer thickness of such materials limits the length of their nonlinear interaction with light. Here, we experimentally demonstrate the enhancement of the second-harmonic generation from monolayer MoSe2 by its integration onto a 220-nm-thick silicon waveguide. Such on-chip integration allows for a marked increase in the interaction length between the MoSe2 and the waveguide mode, further enabling phase matching of the nonlinear process. The demonstrated TMDC-silicon photonic hybrid integration opens the door to second-order nonlinear effects within the silicon photonic platform, including efficient frequency conversion, parametric amplification and the generation of entangled photon pairs.

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Citations

Sep 15, 2018·Nature Communications·Christopher E StevensDenis Karaiskaj
Jul 17, 2020·Nanoscale·Weibao HeXiang'ai Cheng
Nov 28, 2019·Optics Letters·Sejeong KimAlexander S Solntsev
May 18, 2020·Nature Communications·Alessandro TunizC Martijn de Sterke
Jan 18, 2019·Light, Science & Applications·Jin-Hui ChenYan-Qing Lu
Mar 24, 2018·Small·Ankur SharmaYuerui Lu
Mar 27, 2018·Advanced Materials·Anton AutereZhipei Sun
Dec 28, 2019·Optics Express·Franz J F LöchnerFrank Setzpfandt
Oct 8, 2020·Advanced Materials·Gia Quyet NgoFalk Eilenberger
Nov 12, 2020·Advanced Science·Abdus Salam Sarkar, Emmanuel Stratakis
Feb 3, 2021·Optics Letters·Nils BernhardtAlexander S Solntsev
Jul 27, 2021·ACS Nano·Fadil IyikanatF Javier García de Abajo
Jul 4, 2017·ACS Nano·Jiajie PeiYuerui Lu
Dec 19, 2018·ACS Applied Materials & Interfaces·Woosuk ChoiYongho Seo
Jun 13, 2020·Nano Letters·Nils BernhardtAlexander S Solntsev
Jan 12, 2021·The Journal of Physical Chemistry Letters·Wenyan WangYinghui Wang
Jun 5, 2020·Chemical Reviews·Zhigao DaiQiaoliang Bao

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Methods Mentioned

BETA
electron beam lithography

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