Mid-infrared computational temporal ghost imaging
作者机构:College of Electronics and Information EngineeringSichuan UniversityChengduSichuan610064China College of Electrical EngineeringSichuan UniversityChengduSichuan610064China Key Lab of Optical Fiber Sensing&CommunicationsUniversity of Electronic Science&Technology of ChinaChengduSichuan611731China Laboratory of PhotonicsTampere UniversityFI-33014TampereFinland
出 版 物:《Light(Science & Applications)》 (光(科学与应用)(英文版))
年 卷 期:2024年第13卷第6期
页 面:1088-1097页
核心收录:
学科分类:070207[理学-光学] 080901[工学-物理电子学] 0809[工学-电子科学与技术(可授工学、理学学位)] 081203[工学-计算机应用技术] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0835[工学-软件工程] 0803[工学-光学工程] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:supported by National Natural Science Foundation of China (62375189,62311530045,62005186,U22A2090,62075144) Sichuan Outstanding Youth Science and Technology Talents (2022JDJQ0031) Engineering Featured Team Fund of Sichuan University (2020SCUNG105) the Research Council of Finland (320165,356243 and 333949)
摘 要:Ghost imaging in the time domain allows for reconstructing fast temporal objects using a slow *** technique involves correlating random or pre-programmed probing temporal intensity patterns with the integrated signal measured after modulation by the temporal ***,the implementation of temporal ghost imaging necessitates ultrafast detectors or modulators for measuring or pre-programming the probing intensity patterns,which are not available in all spectral regions especially in the mid-infrared ***,we demonstrate a frequency downconversion temporal ghost imaging scheme that enables to extend the operation regime to arbitrary wavelengths regions where fast modulators and detectors are not *** approach modulates a signal with temporal intensity patterns in the near-infrared and transfers the patterns to an idler via difference-frequency generation in a nonlinear crystal at a wavelength where the temporal object can be *** a proof-of-concept,we demonstrate computational temporal ghost imaging in the mid-infrared with operating wavelength that can be tuned from 3.2 to 4.3μ*** scheme is flexible and can be extended to other *** results introduce new possibilities for scan-free pump-probe imaging and the study of ultrafast dynamics in spectral regions where ultrafast modulation or detection is challenging such as the mid-infrared and THz regions.