Mid-infrared nonlinear upconversion imaging and sensing

Christian Pedersen (Invited author), Peter Tidemand-Lichtenberg (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The mid-IR wavelength range is highly relevant for a number of applications related to gas spectroscopy and spectral analysis of complex molecules such as those including CH bounds. The main obstacles for exploitation of mid-IR applications include suitable and affordable mid-IR light sources for excitation of the sample and sensitive mid-IR detectors. With the advent of mid-IR Quantum cascaded lasers and super continuum light sources new possibilities has emerged. However, low-noise, mid-IR (2-15 mu m) detection is still challenging requiring cryogenic cooling to gain sensitivities needed for measurements of fluorescence or absorptions signals. Mid-IR upconversion imaging and detection using nonlinear crystals offers good promise as an alternative, sensitive mid-IR imaging and detection technology. In this paper the fundamental properties of upconversion is discussed.
Original languageEnglish
Title of host publicationProceedings of Spie
Number of pages5
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number97310X
ISBN (Print)9781628419665
Publication statusPublished - 2016
EventNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XV - San Francisco, CA, United States
Duration: 15 Feb 201617 Feb 2016


ConferenceNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XV
CountryUnited States
CitySan Francisco, CA
SeriesProceedings of S P I E - International Society for Optical Engineering


  • mid-IR Imaging
  • upconversion
  • low noise detection
  • nonlinear optics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics
  • Infrared imaging
  • Light
  • Light sources
  • Nonlinear optics
  • Spectrum analysis
  • Cryogenic cooling
  • Detection technology
  • Fundamental properties
  • Low-noise detection
  • Nonlinear crystals
  • Quantum-cascaded lasers
  • Up-conversion
  • Upconversion imaging
  • Absorption cooling
  • Image detectors, convertors, and intensifiers
  • Detection of radiation (bolometers, photoelectric cells, i.r. and submillimetre waves detection)
  • Optical sources and standards
  • Photodetectors
  • Nonlinear optics and devices
  • Image sensors
  • fluorescence
  • infrared detectors
  • infrared imaging
  • infrared sources
  • photodetectors
  • supercontinuum generation
  • midinfrared nonlinear upconversion imaging
  • midinfrared nonlinear upconversion sensing
  • gas spectroscopy
  • spectral analysis
  • molecules
  • CH bounds
  • midinfrared light sources
  • midinfrared quantum cascaded lasers
  • super continuum light sources
  • cryogenic cooling
  • fluorescence signal measurements
  • absorptions signal measurements
  • nonlinear crystals

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