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Proceedings Paper

Nonlinear crystals for imaging and detection of mid-IR radiation
Author(s): C. Pedersen; Ashik A. S.; P. Tidemand-Lichtenberg
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Paper Abstract

The mid-IR wavelength range, i.e. 2-25 μm, houses the vibrational spectra of most gasses and large molecules found in complex structures such as tissue, plastics or food. When designing an upconversion system for imaging or mid-IR detection, several aspects should be considered. Upconversion has several advantageous features which makes it an interesting option to consider for many mid-IR applications. Main advantages include, low-noise detection even at elevated temperatures, an almost instantaneous response time, phase preservation, and the ability to perform upconversion imaging. The χ(2) crystal properties impact the performance of the system significantly. Design aspects related to the choice of crystal as well as different applications is presented.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 112841A (26 February 2020); doi: 10.1117/12.2550844
Show Author Affiliations
C. Pedersen, DTU Fotonik (Denmark)
Ashik A. S., DTU Fotonik (Denmark)
P. Tidemand-Lichtenberg, DTU Fotonik (Denmark)

Published in SPIE Proceedings Vol. 11284:
Smart Photonic and Optoelectronic Integrated Circuits XXII
Sailing He; Laurent Vivien, Editor(s)

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