紫外光子计数单像素成像

近紫外光子计数双光梳光谱学

Near-ultraviolet photon-counting dual-comb spectroscopy

本研究提出一种光子计数双光梳光谱方法，将双光梳技术优势拓展至紫外波段，实现量子极限信噪比与飞瓦级梳齿功率下的碱金属蒸气光谱测量，为短波长精密光谱及光子级诊断应用开辟新路径。

Full-color photon-counting single-pixel imaging

We propose and experimentally demonstrate a high-efficiency single-pixel imaging (SPI) scheme by integrating time-correlated single-photon counting (TCSPC) with time-division multiplexing to acquire full-color images at extremely low light level. This SPI scheme uses a digital micromirror device to modulate a sequence of laser pulses with preset delays to achieve three-color structured illumination, then employs a photomultiplier tube into the TCSPC module to achieve photon-counting detection. By exploiting the time-resolved capabilities of TCSPC, we demodulate the spectrum-image-encoded signa…

Photon counting compressive depth mapping

We demonstrate a compressed sensing, photon counting lidar system based on the single-pixel camera. Our technique recovers both depth and intensity maps from a single under-sampled set of incoherent, linear projections of a scene of interest at ultra-low light levels around 0.5 picowatts. Only two-dimensional reconstructions are required to image a three-dimensional scene. We demonstrate intensity imaging and depth mapping at 256 x 256 pixel transverse resolution with acquisition times as short as 3 seconds. We also show novelty filtering, reconstructing only the difference between two instanc…

Broadband high-resolution terahertz single-pixel imaging

We report a simple single-pixel imaging system with a low mean squared error in the entire terahertz frequency region (3-13 THz) that employs a thin metallic ring with a series of directly perforated random masks and a subpixel mask digitization technique. This imaging system produces high pixel resolution reconstructed images, up to 1200 x 1200 pixels, and imaging area of 32 mm x 32 mm. It can be extended to develop advanced imaging systems in the near-ultraviolet to terahertz region.

用于飞行时间非视距成像应用的小型化时间相关单光子计数模块

Miniaturized time-correlated single-photon counting module for time-of-flight non-line-of-sight imaging applications

针对飞行时间非视距成像系统小型化的实际需求，研发了一款四通道小型化时间相关单光子计数模块，搭配InGaAs/InP单光子探测器可在5 m成像距离下实现厘米级的三维成像分辨率。

用于表征深亚电子读出噪声传感器的光子计数直方图期望最大化算法

Photon Counting Histogram Expectation Maximization Algorithm for Characterization of Deep Sub-Electron Read Noise Sensors

本文提出一种用于表征深亚电子读出噪声图像传感器的光子计数直方图期望最大化算法，能从单样本同时计算量子曝光、转换增益、偏置和读出噪声的最大似然估计，不确定性低于传统方法，并支持自动化分析与可重复研究。