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Paper detail

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, 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.

preprint2019arXivOpen access
Chen YangShi-long LiuZhi-Yuan ZhouYan LiYin-Hai LiShi-kai LiuZhao-huai XuGuang-Can GuoBao-Sen Shi
physics.optics
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Chen YangShi-long LiuZhi-Yuan ZhouYan LiYin-Hai LiShi-kai LiuZhao-huai XuGuang-Can GuoBao-Sen Shi

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