IR-to-Visible Image Upconverter under Nonlinear Crystal Thermal Gradient Operation

Published on 2018-01-11T17:54:50Z (GMT) by
In this work we study the enhancement of the field-of-view of an infrared image up-converter by means of a thermal gradient in a PPLN crystal. Our work focuses on compact upconverters, in which both a short PPLN crystal length and high numerical aperture lenses are employed. We found a qualitative increase in both wavelength and angular tolerances, compared to a constant temperature upconverter, which makes it necessary a correct IR wavelength allocation in order to effectively increase the up-converted area.

Cite this collection

Vicente, Haroldo Maestre; Torregrosa, Adrian; Fernandez-Pousa, Carlos; Capmany, Juan (2018): IR-to-Visible Image Upconverter under Nonlinear Crystal Thermal Gradient Operation. The Optical Society.