Development of a moth-eye grism for long mid-infrared wavelengths

• Project/Area Number: 25800104
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: KAMIZUKA Takafumi 東京大学, 理学(系)研究科(研究院), 研究員 (30613509)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 中間赤外線天文学 / モスアイ / グリズム

Outline of Final Research Achievements

This research aims at developing a grism with high throughput and heat cycle durability for improving efficiency of astronomical observations in long mid-infrared wavelengths. Anti-reflection is important for maximizing throughput, and heat cycle durability is also required for use in infrared astronomical instruments. Moth-eye structure is expected to meet these requirements, and its formation is employed for the anti-reflection technique. By optimizing fabrication processes, a double-sided moth-eye silicon grism is successfully obtained.

Research Products

• [Journal Article] Development of high-throughput silicon lens and grism with moth-eye anti-reflection structure (2014)
  • Author(s): Kamizuka, T., Miyata, T. et al.
  • Journal Title: Proceedings of the SPIE Volume: 9151 Pages: 91515G-91515G
  • DOI: 10.1117/12.2055756
• [Presentation] モスアイ構造を用いた長波長中間赤外線高効率光学素子の開発 (2015)
  • Author(s): 上塚貴史, 宮田隆志, 酒向重行, 大澤亮, 浅野健太朗, 内山瑞穂, 岡田一志, 内山允史, 毛利清, 尾中 敬, 左近樹, 今田大皓, 中川貴雄, 和田武彦
  • Organizer: 天文学会2015年春季年会
  • Place of Presentation: 大阪大学
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] Development of high-throughput silicon lens and grism with moth-eye anti-reflection structure (2014)
  • Author(s): Kamizuka, Takafumi; Miyata, Takashi; Sako, Shigeyuki; Imada, Hiroaki; Ohsawa, Ryou; Asano, Kentaro; Uchiyama, Mizuho; Okada, Kazushi; Uchiyama, Masahito; Wada, Takehiko; Nakagawa, Takao; Nakamura, Tomohiko; Sakon, Itsuki; Onaka, Takashi
  • Organizer: SPIE Astronomical Telescopes and Instrumentation 2014
  • Place of Presentation: Montreal, Quebec, Canada
  • Year and Date: 2014-06-22 – 2014-06-27