Journal article
Enhanced 2D-image upconversion using solid-state lasers
Optical Sensor Technology, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Teraherts Technologies and Biophotonics, Department of Photonics Engineering, Technical University of Denmark3
Quantum Physics and Information Technology, Department of Physics, Technical University of Denmark4
Department of Physics, Technical University of Denmark5
Based on enhanced upconversion, we demonstrate a highly efficient method for converting a full image from one part of the electromagnetic spectrum into a new desired wavelength region. By illuminating a metal transmission mask with a 765 nm Gaussian beam to create an image and subsequently focusing the image inside a nonlinear PPKTP crystal located in the high intra-cavity field of a 1342 nm solid-state Nd:YVO4 laser, an upconverted image at 488 nm is generated.
We have experimentally achieved an upconversion efficiency of 40% under CW conditions. The proposed technique can be further adapted for high efficiency mid-infrared image upconversion where direct and fast detection is difficult or impossible to perform with existing detector technologies.
Language: | English |
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Year: | 2009 |
Pages: | 20885-20890 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.17.020885 |
ORCIDs: | Pedersen, Christian and Tidemand-Lichtenberg, Peter |