Development of a millimeter-wave technology to probe the inflationary universe using cosmic microwave background polarization measurements (LiteBIRD)
- 1.4 Wireless Communications (5G, Beyond5G, 6G)
- 1.8 Unexplored Fields (Space, Satellite, High Altitude Platform Stations (HAPS), Ocean, Underwater)
Tomotake Matsumura
Kavli Institute for the Physics and Mathematics of the Universe
Associate professor
Cosmic inflation is one of the leading hypotheses to explain the unresolved mysteries of our universe. The measurement of the cosmic microwave background polarization enables us to test this hypothesis. We developed high-precision millimeter-wave quasi-optical devices and measurement techniques.
From SPIE2020 Sakurai et al.
Image taken from the Science Council of Japan.
http://www.scj.go.jp/ja/info/kohyo/pdf/kohyo-24-t286-2-2-17.pdf
Related links
Research collaborators
Institute for Photon Science and Technology, The University of Tokyo, Prof. Junji Yumoto
Related publications
- R. Takaku, S. Hanany, H. Imada, H. Ishino, N. Katayama, K. Komatsu, K. Konishi, M. Kuwata-Gonokami, T. Matsumura, K. Mitsuda, H. Sakurai, Y. Sakurai, Q. Wen, N. Y. Yamasaki, K. Young, and J. Yumoto. Broadband, millimeter-wave anti-reflective structures on sapphire ablated with femto-second laser. Journal of Applied Physics, 128(22):225302, 2020.
- H. Sakurai, N. Nemoto, K. Konishi, R. Takaku, Y. Sakurai, N. Katayama, T. Matsumura, J. Yumoto, and M. Kuwata-Gonokami. Terahertz broadband anti-reflection moth-eye structures fabricated by femtosecond laser processing.OSA Continuum, 2(9):2764–2772, Sep 2019.
- Y. Sakurai et al., ``Breadboard model of the polarization modulator unit based on a continuously rotating half-wave plate for the low-frequency telescope of the LiteBIRD space mission”, Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 114534E (2020).
