8 papers
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…
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…
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…
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…
In-Lab High Resolution Mid-infrared Up-conversion Stellar Interferometer Based on Synthetic Long Base-Line
Zhao-Qi-Zhi Han, Zheng Ge, Wen-Tao Luo +6
Detecting mid-infrared (MIR) radiation has significant astronomical applications, although limited by unsatisfactory MIR detectors. Here we reported on the realization of a MIR up-…