摘要
The point-spread function of an optical system determines its optical resolution for both spatial and temporal imaging. For spatial imaging, it is given by a Fourier transform of the pupil function of the system. For temporal imaging based on nonlinear optical processes, such as sum-frequency generation or four-wave mixing, the pointspread function is related to the waveform of the pump wave by a nonlinear transformation. We compare the point-spread functions of three temporal imaging schemes： sum-frequency generation, co-propagating four-wave mixing, and counter-propagating four-wave mixing, and demonstrate that the last scheme provides the best temporal resolution. Our results are valid for both quantum and classical temporal imaging.
The point-spread function of an optical system determines its optical resolution for both spatial and temporal imaging. For spatial imaging, it is given by a Fourier transform of the pupil function of the system. For temporal imaging based on nonlinear optical processes, such as sum-frequency generation or four-wave mixing, the pointspread function is related to the waveform of the pump wave by a nonlinear transformation. We compare the point-spread functions of three temporal imaging schemes： sum-frequency generation, co-propagating four-wave mixing, and counter-propagating four-wave mixing, and demonstrate that the last scheme provides the best temporal resolution. Our results are valid for both quantum and classical temporal imaging.
作者
Junheng Shi
Giuseppe Patera
Youzhen Gui
Mikhail I.Kolobov
Dmitri B.Horoshko
and Shensheng Han
Junheng Shi;Giuseppe Patera;Youzhen Gui;Mikhail I.Kolobov;Dmitri B.Horoshko;Shensheng Han(Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;Univ. Lille, CNRS, UMR 8523-PhLAM-Physique des Lasers Atomes et Molécules;B I. Stepanov Institute of Physics,NASB)
基金
support by the Hi-Tech Research and Development Program of China(Nos.2013AA122902 and 2013AA122901)
the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB21030200)
