title: Single-shot cross-correlator using a long-wavelength sampling pulse.
abstract: We present a single-shot cross-correlating scheme capable of high dynamic range and large temporal window for pulse contrast characterization. By adopting a long-wavelength sampling pulse parametrically converted from the pulse under test, wavelength combination in the correlating process allows the use of a large noncollinear phase-matching angle in periodically poled lithium niobate crystal, matches the high-sensitivity detection system consisting of a fiber array and a photomultiplier tube, and favors the elimination of optical scattering noise. The prototype experiments demonstrate a detectable contrast maximum up to ∼10(9), temporal window of ∼50 ps, and resolution of ∼1 ps, using <0.5 mJ input energy.
authors.affiliation: Department of Optical Science and Engineering, Fudan University, Shanghai, China.
authors.forename: Jingui
authors.initials: J
authors.lastname: Ma
authors.forename: Peng
authors.initials: P
authors.lastname: Yuan
authors.forename: Yongzhi
authors.initials: Y
authors.lastname: Wang
authors.forename: Dongfang
authors.initials: D
authors.lastname: Zhang
authors.forename: Heyuan
authors.initials: H
authors.lastname: Zhu
authors.forename: Liejia
authors.initials: L
authors.lastname: Qian