Time-resolved image plane off-axis digital holography

被引：17
|
作者：
Petrov, N. V. [1 ]
Putilin, S. E. [1 ]
Chipegin, A. A. [1 ]
机构：
[1] ITMO Univ, Dept Photon & Opt Informat Technol, Kronverkskiy Prospekt 49, St Petersburg 197101, Russia
来源：
APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 16期
基金：
俄罗斯基础研究基金会;
关键词：
WAVE-FRONT RECONSTRUCTION; MICROSCOPY; SEQUENCE; LASERS;
D O I：
10.1063/1.4981899
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this work, we demonstrate off-axis image-plane digital holography for measuring ultrafast processes with high temporal resolution. The proposed image-plane holographic configuration in conjunction with numerical post-processing procedures allows us to neglect the walk-off effect in the off-axis arrangement by synthesizing spatial phase distribution with the whole field of view from separate fragments and to increase the spatial resolution by means of a telecentric system with adjustable magnification. We have analyzed temporal resolution taking into account all dispersing elements that increase the duration of the pulses being propagated through the optical setup. The technique was approved with experiment on measuring the dynamics of the refractive index, induced by laser filamentation in air. Published by AIP Publishing.
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页数：5
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