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journal article·2019-01-01Open access

Increased energy of THz waves from a cluster plasma by optimizing laser pulse duration

Kazuaki Mori, Masaki Hashida, Takeshi Nagashima, Dazhi Li, Kensuke Teramoto, Yoshihide Nakamiya, Shunsuke Inoue, Shuji Sakabe

AIP Advances· Volume 9· Issue 1
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Source abstract

Abstract

We have investigated the generation of terahertz (THz) waves from an argon cluster plasma produced by laser pulses of various durations. THz energy depends on laser pulse duration and reaches a peak at a pulse duration of ∼250 fs. This dependence of THz energy on laser pulse duration is attributed to the plasma density produced by the rising edge of the pulse. By irradiating clusters with collinear double laser pulses, we demonstrate that the THz energy can be increased by controlling the plasma density. Optimizing the delay time of the collinear double laser pulses increases the THz energy by ∼2.5 times that with simultaneous irradiation of collinear double laser pulses.
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Research context

OpenAlex topics: Terahertz technology and applications · Laser-Matter Interactions and Applications · Semiconductor Quantum Structures and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University 1 , Gokasho, Uji, Kyoto 611-0011, Japan

Department of Physics, Graduate School of Science, Kyoto University 2 , Kitashirakawa, Sakyo, Kyoto 606-8502, Japan

Faculty of Science and Engineering, Setsunan University 3 , 17-8 Ikeda-Nakamachi, Neyagawa, Osaka 572-8508, Japan

Institute for Laser Technology 4 , 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 550-0004, Japan

Funding

Ministry of Education, Culture, Sports, Science and Technology · Institute for Chemical Research, Kyoto University

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