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Proceedings Paper

Ultrashort pulse measurement using interferometric autocorrelator based on two-photon-absorption detector at 1.55-µm wavelength region
Author(s): Meng Yan; Minyu Yao; Hongming Zhang; Qingwei Wu
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Paper Abstract

In this paper, an interferometric autocorrelator based on two-photon-absorption (TPA) detector is demonstrated. It can be used in the measurement of ultrashort pulse at 1.55 um wavelength region. From the second order autocorrelation trace of optical field, we can infer the pulse width. Accompanied with a linear detector, we can fully characterize the optical pulse, including intensity and phase profiles. A novel phase retrieval algorithm is proposed. It is a combination of an iterative loop and an evolution process. Simulation results show that our algorithm converges stably and can give a better approximation of the optical field than traditional algorithm.

Paper Details

Date Published: 20 January 2005
PDF: 6 pages
Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); doi: 10.1117/12.573681
Show Author Affiliations
Meng Yan, Tsinghua Univ. (China)
Minyu Yao, Tsinghua Univ. (China)
Hongming Zhang, Tsinghua Univ. (China)
Qingwei Wu, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 5633:
Advanced Materials and Devices for Sensing and Imaging II
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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