Spatial structure and simulations of midwave infrared ultrashort pulse laser frequency conversion in polycrystalline chalcogenide optical materials

Anthony Valenzuela, Aaron Schweinsberg, Jiahui Gu, Miroslav Kolesik, Trenton Ensley, Laura Vanderhoef, Michael Tripepi, Christopher Wolfe, Enam Chowdhury

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We experimentally and theoretically investigate the nonlinear frequency conversion of transparent chalcogenide optical materials using ultrashort midwave infrared laser pulses at 3.6 microns. Evidence of the structure of second through sixth harmonic generation demonstrates different levels of filamentation related to laser intensity, sample thickness, and sample position. Simulations using a (3+1)D model with experimentally measured n2 values and random quasi phase matching provide good qualitative agreement with experimental data. Together, the data suggests that focusing geometry and material structure play a significant role in harmonic generation in these materials.

Original languageEnglish (US)
Title of host publicationNonlinear Frequency Generation and Conversion
Subtitle of host publicationMaterials and Devices XX
EditorsPeter G. Schunemann, Kenneth L. Schepler
PublisherSPIE
ISBN (Electronic)9781510641754
DOIs
StatePublished - 2021
EventNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021 - Virtual, Online, United States
Duration: Mar 6 2021Mar 11 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11670
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNonlinear Frequency Generation and Conversion: Materials and Devices XX 2021
Country/TerritoryUnited States
CityVirtual, Online
Period3/6/213/11/21

Keywords

  • High harmonic generation
  • Ultrashort pulse laser propagation
  • UPPE

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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