61 citations · 441 across the 39 of their papers we have counts for
20 papers · 1 filter
Length-dependent SWIR upconversion spectral response of noncritically phase-matched KTP crystals
Xiao-Hua Wang, Chang-Hao Min, Yin-Hai Li +2
Noncritically phase-matched (NCPM) KTP crystals support large-aperture bulk operation, avoid spatial walk-off, and relax angular-alignment requirements, making them attractive for…
Broadband Tunable Photon-Pair Generation and Spectrum Measurement Based on Noncritical Lithium Niobate Crystals
Zhao-Qi-Zhi Han, Bo-Wen Liu, He Zhang +8
Photon pairs play a vital role in modern science, driving extensive research into their generation. Yet, the narrow phase-matching bandwidth of conventional crystals has largely co…
Passive Incoherent Ultrafast Mid-Infrared Upconversion Imaging and Its Calibration
Jin-Peng Li, Zhi-You Li, Zhao-Qi-Zhi Han +7
Ultrafast mid-infrared (MIR) imaging is a key enabling capability for monitoring transient thermal and plasma phenomena in scientific diagnostics and industrial safety. However, co…
Mid-infrared high-sensitive cavity-free in-situ CO gas sensing based on up-conversion detection
Zhao-Qi-Zhi Han, He Zhang, Fan Yang +8
Carbon monoxide (CO) is a significant indicator gas with considerable application value in atmospheric monitoring, industrial production and medical diagnosis. Its fundamental vibr…
Widely tunable cavity-enhanced backward difference-frequency generation
Ming-Yuan Gao, Yue-Wei Song, Ren-Hui Chen +3
Difference-frequency generation (DFG) is a powerful technique for generating widely tunable infrared radiation. However, conventional phase-matching schemes may require tuning mult…
Observation of tuning properties in a doubly resonant backward optical parametric oscillator
Ming-Yuan Gao, Yue-Wei Song, Zhi-Cheng Guo +3
Doubly resonant optical parametric oscillators (OPOs) under continuous wave (CW) pumping are particularly notable for their low threshold and narrow linewidth. Backward OPOs (BOPOs…
High resolution up-conversion imaging in the 10 μm band under incoherent illumination
Zhao-Qi-Zhi Han, Xiao-Hua Wang, Jin-Peng Li +6
Long-wavelength infrared band exhibits significant utility in thermal signature acquisition and molecular spectral analysis, among other applications. The up-conversion detection t…
Creating multi-beam interference from two-beam interference with assistant of harmonics generation
Wuzhen Li, Zhiyuan Zhou, Li Chen +3
Linear optics-based multi-beam interference (MBI), like the Fabry-Perot interferometer, plays an important role in precision optical metrology applications such as laser stabilizat…
Quantum-Enhanced Polarimetric Imaging
Meng-Yu Xie, Su-Jian Niu, Zhao-Qi-Zhi Han +8
Polarimetric imaging, a technique that captures the invisible polarization-related properties of given materials, has broad applications from fundamental physics to advanced fields…
Effective multiband synthetic four-wave mixing by cascading quadratic processes
Li Chen, Zheng Ge, Su-Jian Niu +9
Four wave mixing (FWM) is an important way to generate supercontinuum and frequency combs in the mid-infrared band. Here, we obtain simultaneous synthetic FWM in the visible and mi…
Mid-Infrared Upconversion Imaging Under Different Illumination Conditions
Zheng Ge, Zhao-Qi-Zhi Han, Yi-Yang Liu +9
Converting the medium infrared field to the visible band is an effective image detection method. We propose a comprehensive theory of image up-conversion under continuous optical p…
Thermal camera based on frequency upconversion and its noise-equivalent temperature difference characterization
Zheng Ge, Zhi-Yuan Zhou, Jing-Xin Ceng +5
We present a scheme for estimating the noise-equivalent temperature difference (NETD) of frequency upconversion detectors (UCDs) that detect mid-infrared (MIR) light. In particular…
Harmonics-assisted optical phase amplifier
Wu-Zhen Li, Chen Yang, Zhi-Yuan Zhou +7
The change in the relative phase between two light fields serves as a basic principle for the measurement of the physical quantity that guides this change. It would therefore be hi…
Up-conversion detection of mid-infrared light carrying orbital angular momentum
Zheng Ge, Chen Yang, Yin-hai Li +5
Frequency up-conversion is an effective method of mid-infrared (MIR) detection by converting the long-wavelength photons to the visible domain, where efficient detectors are readil…
Extra-cavity-enhanced difference-frequency generation at 1.63 μm
Chen Yang, Shi-long Liu, Zhi-yuan Zhou +6
A 1632-nm laser has highly important applications in interfacing the wavelength of rubidium-based quantum memories (795 nm) and the telecom band (typically 1550 nm) by frequency co…
Frequency up-conversion of an infrared image via a flat-top pump beam
Chen Yang, Shi-Long Liu, Zhi-Yuan Zhou +6
The infrared imaging detection is an important and promising technology having wide applications. In this work, we report on the frequency up-conversion detection of an image based…
Nonlinear frequency conversion and manipulation of vector beams in a Sagnac loop
Chen Yang, Zhi-Yuan Zhou, Yan Li +6
Vector beams (VBs) are widely investigated for its special intensity and polarization distributions, which is useful for optical micromanipulation, optical micro-fabrication, optic…
Topological charge independent frequency conversion of twisted light
Yan Li, Zhi-Yuan Zhou, Shi-Long Liu +6
Light with orbital angular momentum (OAM), or twisted light, is widely investigated in the fields of optical communications, quantum information science and nonlinear optics by har…
Up-conversion imaging processing with field-of-view and edge enhancement
Shi-Kai Liu, Shi-Long Liu, Zhi-Yuan Zhou +6
Spiral phase contrast is an important and convenient imaging processing technology in edge detection, and a broader field-of-view (FOV) of imaging is a long-pursuing aim to see mor…
Coherent frequency bridge between visible and telecommunications band of vortex light
Shi-long Liu, Shi-kai Liu, Yin-hai Li +3
In quantum communications, vortex photons can encode higher-dimensional quantum states and build high-dimensional communication networks (HDCNs). The interfaces that connect differ…