Ultrashort pulse measurement using interferometric autocorrelator based on two-photon-absorption detector at 1.55-µm wavelength region

Meng Yan; Minyu Yao; Hongming Zhang; Qingwei Wu

doi:10.1117/12.573681

20 January 2005 Ultrashort pulse measurement using interferometric autocorrelator based on two-photon-absorption detector at 1.55-μm wavelength region

Meng Yan, Minyu Yao, Hongming Zhang, Qingwei Wu

Author Affiliations +

Proceedings Volume 5633, Advanced Materials and Devices for Sensing and Imaging II; (2005) https://doi.org/10.1117/12.573681
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Meng Yan, Minyu Yao, Hongming Zhang, and Qingwei Wu "Ultrashort pulse measurement using interferometric autocorrelator based on two-photon-absorption detector at 1.55-μm wavelength region", Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); https://doi.org/10.1117/12.573681

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