Frequency up-conversion of an infrared image via a flat-top pump beam

The infrared imaging detection is an important and promising technology having wide applications. In this work, we report on the frequency up-conversion detection of an image based on sum frequency generation in a nonlinear crystal with a flat-top beam acting as the pump instead of a Gaussian beam,...

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Published inOptics communications Vol. 460; p. 125143
Main Authors Yang, Chen, Liu, Shi-Long, Zhou, Zhi-Yuan, Li, Yan, Li, Yin-Hai, Liu, Shi-Kai, Xu, Zhao-Huai, Guo, Guang-Can, Shi, Bao-Sen
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2020
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Summary:The infrared imaging detection is an important and promising technology having wide applications. In this work, we report on the frequency up-conversion detection of an image based on sum frequency generation in a nonlinear crystal with a flat-top beam acting as the pump instead of a Gaussian beam, the up-converted image at 525 nm falls in the sensitive band of visible detectors and human eyes. Both theoretical simulations and the experimental results clearly demonstrate that using a flat-top beam as a pump can improve the fidelity of an image after the up-conversion compared with a Gaussian pump beam. Our scheme will be very promising for infrared image detection based on frequency up-conversion.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2019.125143