期刊
OPTICS COMMUNICATIONS
卷 229, 期 1-6, 页码 381-390出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2003.10.029
关键词
holography; non-linear optics; cross-correlation of ultrashort pulses
类别
We exploit a slightly non-collinear second-harmonic cross-correlation scheme to map the 3D space-time intensity distribution of an unknown complex-shaped ultrashort optical pulse, down to a resolution of 10 mum in space and 200 fs in time. Moreover, we directly show that the spatial phase information is not lost in the process, thanks to the coherence of the non-linear interaction. This implies that the concept of second-harmonic holography can be employed down to the sub-picosecond time scale, and used to discuss the features of the technique in terms of the reconstructed fields. (C) 2003 Elsevier B.V. All rights reserved.
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