✦ LIBER ✦

Second- and third-order interferometric autocorrelations based on harmonic generations from metal surfaces

✍ Scribed by Jianming Dai; H. Teng; Chunlei Guo

Publisher: Elsevier Science
Year: 2005
Tongue: English
Weight: 159 KB
Volume: 252
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2005.04.017

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✦ Synopsis

A metal-based second-order autocorrelation technique has previously been shown to be advantageous compared to conventional nonlinear crystal-based technique. In this paper, we have fully characterized the dependence of the metalbased autocorrelation signal on incident laser beam angle and light polarization. The results provide us a more complete knowledge to optimize this autocorrelation technique. Furthermore, we have extended this technique to both secondand third-order interferometric autocorrelation measurements that are more suitable for sub-20-fs ultrashort pulse measurements. These results demonstrate the potential of this autocorrelation technique for temporally characterizing ultrafast light sources with a super-broad spectrum, such as those produced from photonic-crystal fibers.

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