A simple model for 2D image upconversion of incoherent light

Jeppe Seidelin Dam; Christian Pedersen; Peter Tidemand-Lichtenberg

doi:10.1117/12.873820

21 February 2011 A simple model for 2D image upconversion of incoherent light

Jeppe Seidelin Dam, Christian Pedersen, Peter Tidemand-Lichtenberg

Proceedings Volume 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X; 791714 (2011) https://doi.org/10.1117/12.873820
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

We present a simple theoretical model for 2 dimensional (2-D) image up-conversion of incoherent light. While image upconversion has been known for more than 40 years, the technology has been hindered by very low conversion quantum efficiency (~10^-7). We show that our implementation compared to previous work can result in a feasible system: Using intracavity upconversion and Quasi Phase Matching (QPM) nonlinear materials provide increased conversion efficiency. Using a QPM crystal and choosing the wavelengths so the first order term in the phasematch wavelength acceptance vanishes, results in very large wavelength acceptance. This work describes how the bandwidth acceptance can be predicted and designed. This gives promise of a new way to make infrared imaging devices with tunable spectral sensitivity.

Citation Download Citation

Jeppe Seidelin Dam, Christian Pedersen, and Peter Tidemand-Lichtenberg "A simple model for 2D image upconversion of incoherent light", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 791714 (21 February 2011); https://doi.org/10.1117/12.873820

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