• Chinese Optics Letters
  • Vol. 22, Issue 11, 113701 (2024)
Xueqin Cao, Fan Wang, Leidong Xing, Zeyun Wang..., Yuanyuan Huang* and Xinlong Xu**|Show fewer author(s)
Author Affiliations
  • Shaanxi Joint Laboratory of Graphene, State Key Laboratory Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi’an 710069, China
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    DOI: 10.3788/COL202422.113701 Cite this Article Set citation alerts
    Xueqin Cao, Fan Wang, Leidong Xing, Zeyun Wang, Yuanyuan Huang, Xinlong Xu, "High-resolution temporal overlap with proper dispersion compensation for a coherent photocurrent experiment revealed by terahertz time-domain emission spectroscopy," Chin. Opt. Lett. 22, 113701 (2024) Copy Citation Text show less

    Abstract

    Coherent control of terahertz (THz) wave radiation with two-color laser excitation requires good temporal overlap with good dispersion control of both the fundamental (ω) and the second harmonic (2ω). Herein, we experimentally determined the temporal overlap of the ω and 2ω pulses in the time-domain, which was corroborated by theoretical calculations. Furthermore, the coherent control of THz radiation of ZnSe also proves the good temporal overlap of two-color femtosecond lasers. This work provides an experimental tool for finding temporal overlap and realizing the dispersion control of two femtosecond lasers.
    n2=1.03961212λ2λ20.00600069867+0.231792344λ2λ20.0200179144+1.01046945λ2λ2103.560653+1.

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    ng=nλdndλ.

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    no2=2.7359+0.01878λ20.018220.01354λ2ne2=2.3753+0.01224λ20.016670.01516λ2.

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    Δτ=lΔngc,

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    ETHzdJi/dt=2TijklEωEω*E2ωsin(Δφ)Ji/τR,

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    Xueqin Cao, Fan Wang, Leidong Xing, Zeyun Wang, Yuanyuan Huang, Xinlong Xu, "High-resolution temporal overlap with proper dispersion compensation for a coherent photocurrent experiment revealed by terahertz time-domain emission spectroscopy," Chin. Opt. Lett. 22, 113701 (2024)
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