AI 中文总结
本研究利用硫镓银晶体的非共线相位匹配实现宽场中长波红外成像，性能比BLIP极限提升约100倍，为室温中红外成像提供了新途径。
AI 中文摘要
利用未被探测的光子的量子成像（QIUP）技术，可仅通过测量可见光范围的干涉来探测中红外频率的物体，从而借助硅相机技术。本研究表明，硫镓银（AgGaS₂）晶体中的非共线相位匹配可实现6-10μm（1670-1000cm⁻¹）波长范围的宽场QIUP。相干探测与红外光子“未被探测”的结合，使成像性能比背景受限红外光电探测（BLIP）极限提升约100倍。在8μm波长下，本研究的图像具备超过8000±100个可分辨单元，分辨率为297±5μm，采集时间为10秒。研究结果为快速、无背景噪声、室温、光谱选择性中红外成像铺平了道路。
英文摘要
Quantum imaging with undetected photons (QIUP) allows an object to be probed at mid-infrared frequencies by only measuring interference in the visible range, thus leveraging silicon camera technology. We show that non-collinear phase-matching in a silver thiogallate (AgGaS$_2$) crystal enables wide-field QIUP in the wavelength range of 6-10 $μ$m (1670-1000 cm$^{-1}$). A combination of coherent detection and infrared photons being ``undetected'' enables imaging at ${\sim}$100 times better than the background-limited infrared photodetection (BLIP) limit. At 8 $μ$m, our images have over 8000 $\pm$ 100 resolvable elements with a 297 $\pm$ 5 $μ$m resolution, and 10 s acquisition time. Our results pave the way to fast, background-noise-free, room-temperature, spectrally-selective mid-infrared imaging.
Comments6 pages, 4 figures
