Nonlinear crystals for imaging and detection of mid-IR radiation

C. Pedersen; Ashik A. S.; P. Tidemand-Lichtenberg

doi:10.1117/12.2550844

26 February 2020 Nonlinear crystals for imaging and detection of mid-IR radiation

C. Pedersen, Ashik A. S., P. Tidemand-Lichtenberg

Author Affiliations +

Proceedings Volume 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII; 112841A (2020) https://doi.org/10.1117/12.2550844
Event: SPIE OPTO, 2020, San Francisco, California, United States

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.

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C. Pedersen, Ashik A. S., and P. Tidemand-Lichtenberg "Nonlinear crystals for imaging and detection of mid-IR radiation", Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 112841A (26 February 2020); https://doi.org/10.1117/12.2550844

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