Improved space bandwidth product in image upconversion

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

We present a technique increasing the space bandwidth product of a nonlinear image upconversion process used for spectral imaging. The technique exploits the strong dependency of the phase-matching condition in sum frequency generation (SFG) on the angle of propagation of the interacting fields with respect to the optical axis. Appropriate scanning of the phase-match condition (Δk=0) while acquiring images, allow us to perform monochromatic image reconstruction with a significantly increased space bandwidth product. We derive the theory for the image reconstruction process and demonstrate acquisition of images with >10 fold increase in space bandwidth product, i.e. the number of pixel elements, when compared to upconversion of images using fixed phase-match conditions.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Volume8240
Pages (from-to)82400F
ISSN0277-786X
DOIs
Publication statusPublished - 2012
EventSPIE Photonics West : Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI - San Francisco, CA, United States
Duration: 21 Jan 201226 Jan 2012

Conference

ConferenceSPIE Photonics West : Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI
CountryUnited States
CitySan Francisco, CA
Period21/01/201226/01/2012

Keywords

  • Infrared imaging
  • Upconversion

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