Supercontinuum Generation in High Order Waveguide Mode with near-Visible Pumping Using Aluminum Nitride Waveguides

Hong Chen, Jingan Zhou, Dongying Li, Dongyu Chen, Abhinav K. Vinod, Houqiang Fu, Xuanqi Huang, Tsung Han Yang, Jossue A. Montes, Kai Fu, Chen Yang, Cun Zheng Ning, Chee Wei Wong, Andrea M. Armani, Yuji Zhao

Research output: Contribution to journalArticlepeer-review

Abstract

Optical sources emitting in the ultraviolet (UV) to near-infrared wavelength range are an enabling tools for a wide variety of applications. To achieve broadband coherent generation within visible and UV spectrum, one fundamental obstacle is the strong material dispersion which limits efficient frequency conversion. Previous works have addressed this challenge by either using high input energies or delicate resonant structures. In this work, a simple device system is proposed to tackle the problem. Single crystalline aluminum nitride material with a threading dislocation density less than 109 cm-2 was used to provide broadband transparency, and a high order waveguide mode (transverse electric, TE10) was used to create anomalous dispersion near 800 nm, in which soliton fission processes are supported. As a result, supercontinuum generation from 490 nm to over 1100 nm with a second harmonic generated band covering from 407 to 425 nm is achieved with the total on-chip pulse energy of 0.6 nJ.

Original languageEnglish (US)
Pages (from-to)1344-1352
Number of pages9
JournalACS Photonics
Volume8
Issue number5
DOIs
StatePublished - May 19 2021

Keywords

  • aluminum nitride
  • nonlinear Schrödinger equation
  • nonlinear optics
  • second harmonic generation
  • soliton dynamics
  • supercontinuum generation

ASJC Scopus subject areas

  • Biotechnology
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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