Development of nulling interferometric coronagraph for segmented mirror telescopes

2011 Fiscal Year Final Research Report

• Project/Area Number: 21340041
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Hokkaido University
• Principal Investigator: BABA Naoshi 北海道大学, 大学院・工学研究院, 教授 (70143261)
• Co-Investigator(Renkei-kenkyūsha): MIURA Noriaki 北見工業大学, 工学部, 教授 (30209720) ; TAMURA Motohide 国立天文台, 光赤外研究部, 准教授 (00260018)
• Project Period (FY): 2009 – 2011
• Keywords: 光学赤外線天文学 / 大型望遠鏡 / 太陽系外惑星 / 観測装置

Research Abstract

We developed an instrument for observing directly extra-solar planets with segmented-mirror telescopes. It is desirable to extinct starlight for observing directly extra-solar planets. In order to achieve nulling and lateral shearing simultaneously for starlight we proposed use of a pair of two Fresnel rohmbs with different sizes in the Mach-Zhender interferometer. We showed the experimental verification of our proposed method.

Research Products

• [Journal Article] Lateral shearing with a pair of double Fresnel rhombs for nulling interferometry (2011)
  • Author(s): N. Baba, K. Kobayashi, Y. Kogoma, and N. Murakami
  • Journal Title: Opt. Lett Volume: 36 Pages: 3611-3613
  • Peer Reviewed
• [Journal Article] Common-path lateral-shearing nulling interferometry with a Savart plate for exoplanet detection (2010)
  • Author(s): N. Murakami and N. Baba
  • Journal Title: Opt. Lett Volume: 35 Pages: 3003-3005
  • Peer Reviewed
• [Journal Article] Polarization interferometric nulling coronagraph for high-contrast imaging (2010)
  • Author(s): N. Murakami, K. Yokochi, J. Nishikawa, M. Tamura, T. Kurokawa, M. Takeda, and N. Baba
  • Journal Title: Appl. Opt Volume: 49 Pages: D106-D114
  • Peer Reviewed
• [Journal Article] Spectral reconstruction method for exoplanets (2010)
  • Author(s): N. Baba, N. Zubko, H. Shibuya, and N. Murakami
  • Journal Title: J. Modern Optics Volume: 57 Pages: 1803-1807
  • Peer Reviewed
• [Journal Article] Solar adaptive optics system using an electromagnetic deformable mirror (2009)
  • Author(s): N. Miura, Y. Noto, S. Kato, F. Yokoyama, S. Kuwamura, N. Baba, Y. Hanaoka, S. Nagata, S. Ueno, R. Kitai, K. Ichimoto, and H. Takami
  • Journal Title: Optical Review Volume: 16 Pages: 558-561
  • Peer Reviewed
• [Presentation] 太陽補償光学系KIT-AOの開発:装置開発状況(4) (2011)
  • Author(s): 三浦則明、宮崎順一、桑村進、馬場直志、花岡庸一郎、高見秀樹、上野悟、仲谷善一、永田伸一、北井礼三郎、一本潔
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学/鹿児島
  • Year and Date: 20110919-22
• [Presentation] ダブルフレネルロムによるシェアリング・ナル干渉計の検証実験 (2011)
  • Author(s): 小後摩佑介,村上尚史,馬場直志
  • Organizer: 日本天文学会2011年春季年会V85a
  • Place of Presentation: 筑波大学/つくば、東日本大震災のため開催中止なるも学会成立。予稿集有り
  • Year and Date: 20110316-19
• [Presentation] Nulling interferometry for lateral shearing by use of double Fresnel rhombs (2010)
  • Author(s): Naoshi Baba, Keita Kobayashi, and Naoshi Murakami
  • Organizer: SPIE Astronomical Instrumentation
  • Place of Presentation: San Diego, USA
  • Year and Date: 2010-06-29
• [Presentation] シェアリング・ナル干渉ステラコロナグラフの特性 (2010)
  • Author(s): 小林渓太、馬場直志、村上尚史、小後摩佑介
  • Organizer: 第45回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北大/札幌
  • Year and Date: 2010-01-08
• [Presentation] セグメント型望遠鏡用シェアリング・ナル干渉ステラコロナグラフの検討 (2009)
  • Author(s): 小林渓太、馬場直志、小後摩佑介、村上尚史
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 山口大/山口
  • Year and Date: 20090914-16