DATE2022.01.27 #Press Releases
Moth-eye structures fabricated by ultrashort pulsed laser processing technology
First in the world to be implemented in a radio telescope
Disclaimer: machine translated by DeepL which may contain errors.
- Contributing to the Improvement of Sensitivity of Space Microwave Observation Instruments
The University of Tokyo Institute for Advanced Study, Kavli Institute for the Physics and Mathematics of the Universe ( Kavli IPMU)
Graduate School of Science, The University of Tokyo
Institute for Solid State Physics, The University of Tokyo
Overview of Kavli IPMU
The University of Tokyo Graduate School of ScienceRyotaTakaku, Associate Professor Tomotake Matsumura of Kavli IPMU, andProfessorShaul Hanany of the University of Minnesota, USA, who have been studying at Kavli IPMU as graduate students The international research team, led by Mr. Ryota Matsusaku of the University of Tokyo, Associate Professor Tomotake Matsumura of Kavli IPMU, and Professor Shaul Hanany of the University of Minnesota, has successfully developed the world's firstinfrared absorption filter with alarge-areamoth-eyeanti-reflection structure that can be mounted on a radio telescope, using an ultrafast laser processing system developed at the Graduate School of Science of the University of Tokyo and the Institute for Solid State Physics of the University of Tokyo. The research team developed an infrared absorption filter with a large-area moth-eye anti-reflection structure that can be mounted on a radio telescope. The research teamprovided thedeveloped infrared absorbing filter to the MUSTANG2receiver of the GreenBanktelescope, a radio telescope located in West Virginia, USA, where it was installed. This enabled the telescope to capture light signals in the millimeter wave band with high sensitivity for continuous observation while suppressing infrared radiation from the atmosphere, which is a heat source, and from the telescope itself. This successful development is expected to be the first step towardeven larger infrared absorption filtersbeing installed infuturepolarimetric instruments for the Cosmic Microwave Background Radiation ( CMB).
The research resultswere published inOptics Express, a journal published by the Optical Society of America, on November30, 2021.
Figure: Schematic illust ration of a pulsed laser-processed large-areamoth-eyeinfrared absorbing filter with anti-reflective structure to observe radiation from the early universe ( Credit: NASA, ESA, M. Postman (STScI), and the CLASH Team / NRAO, NRAO AUI, NSF / modified by Kavli IPMU)
The research results were supported by Professor Makoto Gokami of the Department of Physics, Professor Emeritus Junji Yumoto of the University of Tokyo, and Associate Professor Kuniaki Konishi of the Institute for Photon Science and Technology.
For more information, please visit the Kavli IPMU website.