7 papers
Highly sensitive detection for infrared photons by non-degenerate two-photon absorption under mid-infrared pumping
Jianan Fang, Yinqi Wang, Ming Yan +3
We have demonstrated highly-sensitive photon counting in the infrared based on the two-photon absorption (2PA) in a silicon avalanche photodiode, where the required photon energy f…
Wide-field mid-infrared single-photon upconversion imaging
Kun Huang, Jianan Fang, Ming Yan +2
Frequency upconversion technique, where the infrared signal is nonlinearly translated into the visible band to leverage the silicon sensors, offers a promising alternation for the…
Mid-Infrared Single-Photon Edge Enhanced Imaging based on Nonlinear Vortex Filtering
Yinqi Wang, Jianan Fang, Tingting Zheng +6
Edge enhanced imaging via the spiral phase contrast enables to reveal the phase or amplitude gradients of a target, which has been proved useful in feature recognition, machine vis…
Single-Photon Infrared Imaging with a Silicon Camera Based on Long-Wavelength-Pumping Two-Photon Absorption
Jianan Fang, Yinqi Wang, E Wu +3
We experimentally demonstrated an ultra-sensitive imaging system for telecom photons based on the non-degenerate two-photon absorption in a silicon-based electron multiplying charg…
Mid-infrared single-pixel imaging at the single-photon level
Yinqi Wang, Kun Huang, Jianan Fang +3
Single-pixel cameras have recently emerged as promising alternatives to multi-pixel sensors due to reduced costs and superior durability, which are particularly attractive for mid-…
Mid-infrared single-photon 3D imaging
Jianan Fang, Kun Huang, E Wu +2
Active mid-infrared (MIR) imagers capable of retrieving three-dimensional (3D) structure and reflectivity information are highly attractive in a wide range of biomedical and indust…