Subcycle time-resolved study for efficient terahertz high harmonic generation in Dirac semimetal Cd3As2 (Conference Presentation)

Natsuki Kanda; Bing Cheng; Tatsuhiko N. Ikeda; Takuya Matsuda; Peiyu Xia; Timo Schumann; Susanne Stemmer; Jiro Itatani; N. Peter Armitage; Ryusuke Matsunaga

doi:10.1117/12.2551046

10 March 2020 Subcycle time-resolved study for efficient terahertz high harmonic generation in Dirac semimetal Cd₃As₂ (Conference Presentation)

Natsuki Kanda, Bing Cheng, Tatsuhiko N. Ikeda, Takuya Matsuda, Peiyu Xia, Timo Schumann, Susanne Stemmer, Jiro Itatani, N. Peter Armitage, Ryusuke Matsunaga

Author Affiliations +

Proceedings Volume 11278, Ultrafast Phenomena and Nanophotonics XXIV; 112780J (2020) https://doi.org/10.1117/12.2551046
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

High harmonic generation in solids attracted great attentions as a new scheme for frequency conversion. We report observation of an extremely efficient terahertz (THz) third- and fifth-harmonic generation in thin films of Cd3As2, a three-dimensional Dirac semimetal with massless electron dispersion, as it is observable with tabletop THz source at room temperature. Our THz pump-THz probe study with subcycle time resolution elucidates that the intraband current of coherently accelerated Dirac electrons is the main source of the THz harmonics as expected theoretically. The results pave the way toward novel devices for ultrafast THz electronics and photonics based on topological semimetals.

Conference Presentation

Citation Download Citation

Natsuki Kanda, Bing Cheng, Tatsuhiko N. Ikeda, Takuya Matsuda, Peiyu Xia, Timo Schumann, Susanne Stemmer, Jiro Itatani, N. Peter Armitage, and Ryusuke Matsunaga "Subcycle time-resolved study for efficient terahertz high harmonic generation in Dirac semimetal Cd₃As₂ (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112780J (10 March 2020); https://doi.org/10.1117/12.2551046

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Terahertz radiation

Metalloids

High harmonic generation

Dispersion

Graphene

Harmonic generation

Photonics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years