• Advanced Photonics Nexus
  • Vol. 3, Issue 1, 016002 (2024)
Keitaro Shimada1, Ayumu Ishijima2、†, Takao Saiki2, Ichiro Sakuma1、2、3, Yuki Inada1、4, and Keiichi Nakagawa1、2、*
Author Affiliations
  • 1The University of Tokyo, Department of Bioengineering, Tokyo, Japan
  • 2The University of Tokyo, Department of Precision Engineering, Tokyo, Japan
  • 3The University of Tokyo, Medical Device Development and Regulation Research Center, Tokyo, Japan
  • 4Saitama University, Department of Electronics and Information Sciences, Saitama, Japan
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    DOI: 10.1117/1.APN.3.1.016002 Cite this Article Set citation alerts
    Keitaro Shimada, Ayumu Ishijima, Takao Saiki, Ichiro Sakuma, Yuki Inada, Keiichi Nakagawa, "Spectrum shuttle for producing spatially shapable GHz burst pulses," Adv. Photon. Nexus 3, 016002 (2024) Copy Citation Text show less

    Abstract

    Spatiotemporal shaping of ultrashort pulses is pivotal for various technologies, such as burst laser ablation and ultrafast imaging. However, the difficulty of pulse stretching to subnanosecond intervals and independent control of the spatial profile for each pulse limit their advancement. We present a pulse manipulation technique for producing spectrally separated GHz burst pulses from a single ultrashort pulse, where each pulse is spatially shapable. We demonstrated the production of pulse trains at intervals of 0.1 to 3 ns in the 800- and 400-nm wavelength bands and applied them to ultrafast single-shot transmission spectroscopic imaging (4 Gfps) of laser ablation dynamics with two-color sequentially timed all-optical mapping photography. Furthermore, we demonstrated the production of pulse trains containing a shifted or dual-peak pulse as examples of individual spatial shaping of GHz burst pulses. Our proposed technique brings unprecedented spatiotemporal manipulation of GHz burst pulses, which can be useful for a wide range of laser applications.
    Supplementary Materials
    Keitaro Shimada, Ayumu Ishijima, Takao Saiki, Ichiro Sakuma, Yuki Inada, Keiichi Nakagawa, "Spectrum shuttle for producing spatially shapable GHz burst pulses," Adv. Photon. Nexus 3, 016002 (2024)
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