Demur Romain, Garioud Renaud, Grisard Arnaud, Lallier Eric, Leviandier Luc, Morvan Loïc, Treps Nicolas, Fabre Claude
Opt Express. 2018 May 14;26(10):13252-13263. doi: 10.1364/OE.26.013252.
We present an upconversion imaging experiment from the near-infrared to the visible spectrum. Using a dedicated broadband pump laser to increase the number of resolved elements converted in the image we obtain up to 56x64 spatial elements with a 2.7 nm wide pump spectrum, more than 10 times the number of elements accessible with a narrowband laser. Results in terms of field of view, resolution and conversion efficiency are in good agreement with simulations. The computed sensitivity of our experiment favorably compares with direct InGaAs camera detection.
我们展示了一个从近红外到可见光谱的上转换成像实验。使用专用的宽带泵浦激光器来增加图像中转换的分辨元素数量，在2.7 nm宽的泵浦光谱下，我们获得了多达56×64个空间元素，这是使用窄带激光器可获得元素数量的10倍以上。在视场、分辨率和转换效率方面的结果与模拟结果吻合良好。我们实验的计算灵敏度与直接InGaAs相机检测相比具有优势。
