Chemical imaging based on mid-infrared (MIR) spectroscopic contrast is an important technique with a myriad of applications, including biomedical imaging and environmental monitoring. Current MIR cameras, however, lack in performance and are much less affordable compared to mature Si-based devices, which operate in the visible and near-infrared. Here we demonstrate fast MIR chemical imaging through non-degenerate two-photon absorption (NTA) in a standard Si-based charge-coupled device (CCD). We show that wide-field MIR images can be obtained at 100 ms exposure times using picosecond pulse energies of only a few fJ per pixel through NTA directly on the CCD chip. Because this on-chip approach does not rely on phase-matching, it is alignment-free and does not necessitate complex post-processing of the images. We emphasize the utility of this technique through chemically selective MIR imaging of polymers and biological samples, including MIR videos of moving targets, physical processes and live nematodes.
Measurements and tests on FBK silicon sensors with an optimized electronic design for a CTA camera
2013年10月，意大利教育部批准了一项研究与开发（R&D）研究的资金，该研究属于“意大利制造的切连科夫望远镜（Progetto Premiale Telescopi Cherenkov made in Italy，简称CTEE）”，致力于为切连科夫望远镜阵列（CTA）财团开发一台相机演示器。演示器由一个基于硅光电倍增器（SiPM）技术的传感器平面和一个为信号采样而设计的电子设备组成。对Fondazione Bruno Kessler（FBK-Trento，意大利）生产的传感器矩阵和SITAEL S.p.A.生产的电子原型进行初步测试。将提交。特别是，我们使用了不同的电子设计，以优化输出信号的尾部消除。这对于预期高背景的应用至关重要，如CTA实验。
PySiPMGUI: A Universal Python-Based Software for Photodetector I-V Quality Assurance: From Underground Dark Matter Searches to Astroparticle Cherenkov Cameras
Homi Bhabha National Institute（霍米·巴巴国立研究所）；Saha Institute of Nuclear Physics（萨哈核物理研究所）
Recent application studies of an INTPIX4NA SOIPIX detector-based X-ray camera using an SiTCP-XG 10GbE-based high-speed readout system at KEK facilities
High Energy Accelerator Research Organization (KEK)（高能加速器研究机构）；Graduate University for Advanced Studies (SOKENDAI)（高级研究院）
