Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode

Akira Yada, Kazuya Takasago, Shinji Ito, Tatsuya Yanagida, Jinfeng Yang, Masakazu Washio, Kenji Torizuka, Akira Endo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We demonstrated generation of square-shaped ultraviolet pulses and that they reduces the emittance of electron beams from laser-photocathode RF-gun. Some frequency components of femtosecond pulses from a Ti:sapphire oscillator are modulated with a pulse shaper that consists of a lens pair, gratings, and a liquid crystal spatial light modulator (LC-SLM) to generate square-shaped pulses. The shaped pulses were amplified up to 3 mJ through a regenerative amplifier, and were converted to ultraviolet region with two different nonlinear crystals. Energy of the shaped pulses was about 100 μJ which is sufficient to generate electron charge of 1 nC. In our experiment, emittance of electron beam was reduced to as low as almost the half of that with non-shaped pulses.

    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    EditorsA.V. Kudryashov
    Pages213-221
    Number of pages9
    Volume4629
    DOIs
    Publication statusPublished - 2002
    EventLaser Resonators and Beam Control V - San Jose, CA, United States
    Duration: 2002 Jan 222002 Jan 23

    Other

    OtherLaser Resonators and Beam Control V
    CountryUnited States
    CitySan Jose, CA
    Period02/1/2202/1/23

    Fingerprint

    Photocathodes
    photocathodes
    emittance
    Electron beams
    Electrons
    pulses
    Ultrashort pulses
    Sapphire
    Liquid crystals
    Lenses
    electrons
    Crystals
    Lasers
    electron beams
    Experiments
    shapers
    light modulators
    sapphire
    amplifiers
    liquid crystals

    Keywords

    • Emittance
    • Flat top
    • Pulse shaping
    • RF-gun
    • Square pulse
    • Ultraviolet

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics

    Cite this

    Yada, A., Takasago, K., Ito, S., Yanagida, T., Yang, J., Washio, M., ... Endo, A. (2002). Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode. In A. V. Kudryashov (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4629, pp. 213-221) https://doi.org/10.1117/12.469490

    Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode. / Yada, Akira; Takasago, Kazuya; Ito, Shinji; Yanagida, Tatsuya; Yang, Jinfeng; Washio, Masakazu; Torizuka, Kenji; Endo, Akira.

    Proceedings of SPIE - The International Society for Optical Engineering. ed. / A.V. Kudryashov. Vol. 4629 2002. p. 213-221.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Yada, A, Takasago, K, Ito, S, Yanagida, T, Yang, J, Washio, M, Torizuka, K & Endo, A 2002, Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode. in AV Kudryashov (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4629, pp. 213-221, Laser Resonators and Beam Control V, San Jose, CA, United States, 02/1/22. https://doi.org/10.1117/12.469490
    Yada A, Takasago K, Ito S, Yanagida T, Yang J, Washio M et al. Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode. In Kudryashov AV, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4629. 2002. p. 213-221 https://doi.org/10.1117/12.469490
    Yada, Akira ; Takasago, Kazuya ; Ito, Shinji ; Yanagida, Tatsuya ; Yang, Jinfeng ; Washio, Masakazu ; Torizuka, Kenji ; Endo, Akira. / Production of picosecond square-shaped ultraviolet pulses for low-emittance electron bunch generation from an RF photocathode. Proceedings of SPIE - The International Society for Optical Engineering. editor / A.V. Kudryashov. Vol. 4629 2002. pp. 213-221
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