Upconversion active imaging system at 2 µm with a double pulsed fiber laser

Romain Demur; Arnaud Grisard; Luc Leviandier; Eric Lallier

doi:10.1117/12.2649133

17 March 2023 Upconversion active imaging system at 2 µm with a double pulsed fiber laser

Romain Demur, Arnaud Grisard, Luc Leviandier, Eric Lallier

Proceedings Volume PC12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII; PC124050C (2023) https://doi.org/10.1117/12.2649133
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We present an active imaging system using an upconversion detection scheme to detect the infrared light with a low noise visible camera. The system comprises one single fiber amplification chain to generate both the illumination pulse signal at 2 µm and the pump pulse at 1.55 µm for sum-frequency generation in a PPLN crystal. The 10 nm wide pump spectrum expands the phase matching condition of the system and increases the number of spatial modes signal up to 128x128 pixels, compatible with active imaging requirements. The whole setup is movable and we will present images from outdoor scenes.

Conference Presentation

Citation Download Citation

Romain Demur, Arnaud Grisard, Luc Leviandier, and Eric Lallier "Upconversion active imaging system at 2 µm with a double pulsed fiber laser", Proc. SPIE PC12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII, PC124050C (17 March 2023); https://doi.org/10.1117/12.2649133

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