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arXiv · 1912.11823

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

Chen Yang·Shi-Long Liu·Zhi-Yuan Zhou·Yan Li·Yin-Hai Li·Shi-Kai Liu·Zhao-Huai Xu·Guang-Can Guo·Bao-Sen Shi
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Abstract

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.

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Chen Yang, Shi-Long Liu, Zhi-Yuan Zhou, Yan Li, Yin-Hai Li, Shi-Kai Liu, Zhao-Huai Xu, Guang-Can Guo, Bao-Sen Shi. 2019-12-26. Frequency up-conversion of an infrared image via a flat-top pump beam. https://doi.org/10.1016/j.optcom.2019.125143

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