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

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.

Citation Download Citation

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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