Study on an achromatic high-contrast polarimetric astronomical observation system using a pupil-remapping optics

• Project/Area Number: 26287026
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Astronomy
• Research Institution: Hokkaido University
• Principal Investigator: Murakami Naoshi 北海道大学, 工学(系)研究科(研究院), 助教 (80450188)
• Co-Investigator(Renkei-kenkyūsha): NISHIKAWA Jun 国立天文台, 光赤外研究部, 助教 (70280568) ; TAMURA Motohide 東京大学, 大学院理学系研究科, 教授 (00260018) ; BABA Naoshi 北海道大学, 名誉教授 (70143261)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: 光赤外線天文学 / 応用光学・量子光工学 / 太陽系外惑星 / コロナグラフ / 偏光 / 光赤外天文学 / フォトニック結晶 / 光学赤外線天文学

Outline of Final Research Achievements

For directly detecting extrasolar planets (planets orbiting around stars other than the Sun), we developed a high-contrast astronomical instrument to strongly reject bright starlight which is obstacle to detection of faint planetary light. We proposed new high-contrast techniques (a pupil-remapping optical system for focal-plane phase-mask coronagraphs, a polarimetric technique based on speckle decorrelation method, and so on), and carried out computer simulation and laboratory demonstration to evaluate the performance of the proposed techniques. Results of the computer simulation and the laboratory demonstration suggest that the proposed techniques can strongly reject bright starlight even when using a telescope which is not optimized for observations of extrasolar planets.

Research Products

• [Journal Article] A three-layer eight-octant phase mask towards broadband high-contrast observations (2016)
  • Author(s): N. Murakami, J. Nishikawa, N. Akaiwa, Y. Komuro, N. Baba, M. Tamura
  • Journal Title: Proc. SPIE Volume: 9912 Pages: 99126G-99126G
  • DOI: 10.1117/12.2231946
  • Acknowledgement Compliant
• [Journal Article] Development of speckle nulling technique for the Savart-plate lateral-shearing interferometric nuller for exoplanets (SPLINE) (2016)
  • Author(s): K. Yoneta, N. Murakami, T. Kotani, H. Kawahara, T. Matsuo, N. Baba, M. Tamura
  • Journal Title: Proc. SPIE Volume: 9912 Pages: 99126I-99126I
  • DOI: 10.1117/12.2231950
  • Acknowledgement Compliant
• [Journal Article] Contrast improvement with imperfect pre-coronagraph and dark-hole (2016)
  • Author(s): J. Nishikawa, M. Oya, N. Murakami, M. Tamura, T. Kurokawa, Y. Tanaka, S. Kumagai, T. Kotani
  • Journal Title: Proc. SPIE Volume: 9904 Pages: 99043E-99043E
  • DOI: 10.1117/12.2232920
• [Journal Article] Coronagraph experiment on dark-hole control by speckle area nulling method (2015)
  • Author(s): M. Oya, J. Nishikawa, M. Horie, K. Sato, N. Murakami, T. Kotani, S. Kumagai, M. Tamura, Y. Tanaka, T. Kurokawa, Takashi
  • Journal Title: Optical Review Volume: 22 Issue: 5 Pages: 736-740
  • DOI: 10.1007/s10043-015-0118-1
  • Peer Reviewed
• [Journal Article] Numerically designed phase-mask for stellar coronagraph (2015)
  • Author(s): N. Baba, N. Murakami, N. Miura, and M. Tamura
  • Journal Title: Proc. SPIE Volume: 9605 Pages: 96051V-96051V
  • DOI: 10.1117/12.2186498
  • NAID: 120006671845
  • Open Access / Acknowledgement Compliant
• [Journal Article] The Subaru Coronagraphic Extreme Adaptive Optics System: Enabling High-Contrast Imaging on Solar-System Scales (2015)
  • Author(s): N. Jovanovic, F. Martinache, O. Guyon, C. Clergeon, G. Singh, T. Kudo, V. Garrel, K. Newman, D. Doughty, J. Lozi, J. Males, Y. Minowa, Y. Hayano, N. Takato, J. Morino, J. Kuhn, E. Serabyn, B. Norris, P. Tuthill, G. Schworer, P. Stewart, L. Close, E. Huby, G. Perrin, S. Lacour, L. Gauchet, N. Murakami, F. Oshiyama
  • Journal Title: Publications of the Astronomical Society of Pacific Volume: 127 Issue: 955 Pages: 890-910
  • DOI: 10.1086/682989
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Dispersion reduction in generation of high-order optical vortex using axially symmetric half-wave plates (2015)
  • Author(s): M. Sakamoto, R. Fukumoto, N. Murakami, R. Morita, K. Oka
  • Journal Title: Optical Review Volume: 22 Issue: 1 Pages: 174-178
  • DOI: 10.1007/s10043-015-0026-4
  • Peer Reviewed
• [Journal Article] Spectroscopic Coronagraphy for Planetary Radial Velocimetry of Exoplanets (2014)
  • Author(s): Hajime Kawahara, Naoshi Murakami, Taro Matsuo, Takayuki Kotani
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 212 Issue: 2 Pages: 27-27
  • DOI: 10.1088/0067-0049/212/2/27
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Recent progress on phase-mask coronagraphy based on photonic-crystal technology (2014)
  • Author(s): Murakami, Naoshi, Nishikawa, Jun, Tamura, Motohide, Serabyn, Eugene, Traub, Wesley A., Liewer, Kurt M., Moody, Dwight C., Trauger, John T., Guyon, Olivier, Martinache, Frantz, and 8 coauthors
  • Journal Title: Proceedings of the SPIE Volume: 9143 Pages: 914334-914334
  • DOI: 10.1117/12.2054790
  • Peer Reviewed
• [Journal Article] Laboratory demonstration of the Savart-plate lateral-shearing interferometric nuller for exoplanets (SPLINE) (2014)
  • Author(s): Kitou, Hirofumi, Murakami, Naoshi, Kida, Manabu, Baba, Naoshi, Matsuo, Taro, Kotani, Takayuki, Kawahara, Hajime, Tamura, Motohide
  • Journal Title: Proceedings of the SPIE Volume: 9151 Pages: 91515N-91515N
  • DOI: 10.1117/12.2055287
• [Journal Article] A coronagraph system with unbalanced nulling interferometer : progress of optics and control method (2014)
  • Author(s): Nishikawa, Jun, Oya, Masahito, Horie, Masaaki, Sato, Kazuma, Fukase, Masao, Murakami, Naoshi, Kotani, Takayuki, Kumagai, Shiomi, Tamura, Motohide, Tanaka, Yosuke, Kurokawa, Takashi
  • Journal Title: Proceedings of the SPIE Volume: 9143 Pages: 91433A-91433A
  • DOI: 10.1117/12.2055636
  • Peer Reviewed
• [Journal Article] Adaptive optics operation with focal wavefront sensor in a coronagraph for direct observation of exoplanets (2014)
  • Author(s): Oya, Masahito, Nishikawa, Jun, Horie, Masaaki, Sato, Kazuma, Fukase, Masao, Murakami, Naoshi, Kotani, Takayuki, Kumagai, Shiomi, Tamura, Motohide, Tanaka, Yosuke, Kurokawa, Takashi
  • Journal Title: Proceedings of the SPIE Volume: 9143 Pages: 91433B-91433B
  • DOI: 10.1117/12.2055670
  • Peer Reviewed
• [Journal Article] High-contrast planet imager for Kyoto 4m segmented telescope (2014)
  • Author(s): Matsuo, Taro, Murakami, Naoshi, Kotani, Takayuki, Kawahara, Hajime, Natsume, Noriaki, Kino, Masaru, Yamamoto, Kodai, Imada, Hiroaki, Kurita, Mikio, Iribe, Masatsugu, and 13 coauthors
  • Journal Title: Proceedings of the SPIE Volume: 9147 Pages: 91471V-91471V
  • DOI: 10.1117/12.2055751
• [Presentation] Astronomical high-contrast techniques toward direct imaging of Earth-like exoplanets (2017)
  • Author(s): N. Murakami
  • Organizer: The 24th Congress of the International Commission for Optics
  • Place of Presentation: 京王プラザホテル（東京都新宿区）
  • Year and Date: 2017-08-21
  • Int'l Joint Research / Invited
• [Presentation] 太陽系外惑星の直接観測を目指したサバール板横シヤリング・ナル干渉計のためのスペックル除去技術の開発 (2017)
  • Author(s): 米田謙太，村上尚史, 小谷隆行, 河原創，松尾太郎，馬場直志，田村元秀
  • Organizer: 第52回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北見工業大学（北海道北見市）
  • Year and Date: 2017-01-07
• [Presentation] 太陽系外惑星観測を目指した高コントラスト静的フーリエ変換分光器の基礎実験 (2017)
  • Author(s): 高橋瑞樹, 村上尚史, 小谷隆行, 河原創
  • Organizer: 第52回応用物理学会北海道支部学術講演会
  • Place of Presentation: 北見工業大学（北海道北見市）
  • Year and Date: 2017-01-07
• [Presentation] 瞳再配置型光学系による位相マスクコロナグラフの実証実験2 (2016)
  • Author(s): 赤岩夏海, 村上尚史, 西川淳, 田村元秀, 小室佑介, 馬場直志
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学（愛媛県松山市）
  • Year and Date: 2016-09-14
• [Presentation] 広帯域コロナグラフ観測を目指した3層8分割位相マスクの特性評価 (2016)
  • Author(s): 小室佑介, 村上尚史, 西川淳, 赤岩夏海, 馬場直志, 田村元秀
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学（愛媛県松山市）
  • Year and Date: 2016-09-14
• [Presentation] WFIRSTコロナグラフのための偏光補正デバイスの開発 (2016)
  • Author(s): 村上尚史, 田村元秀, 西川淳, Wesley A. Traub, Hong Tang, John T. Trauger, 住貴宏, 山田亨, WFIRST ワーキンググループ
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学（愛媛県松山市）
  • Year and Date: 2016-09-14
• [Presentation] 京大岡山3.8m望遠鏡搭載に向けた高コントラスト装置SPLINEの開発 (2016)
  • Author(s): 黒田真之佑, 村上尚史, 小谷隆行, 河原創, 山本広大, 松尾太郎, 馬場直志, 田村元秀
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学（愛媛県松山市）
  • Year and Date: 2016-09-14
• [Presentation] A three-layer eight-octant phase mask towards broadband high-contrast (2016)
  • Author(s): N. Murakami, J. Nishikawa, N. Akaiwa, Y. Komuro, N. Baba, M. Tamura
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Edinburgh International Conference Centre (Edinburgh/Scotland, United Kingdom)
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Development of speckle nulling technique for the Savart-plate lateral-shearing interferometric nuller for exoplanets (SPLINE) (2016)
  • Author(s): K. Yoneta, N. Murakami, T. Kotani, H. Kawahara, T. Matsuo, N. Baba, M. Tamura
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Edinburgh International Conference Centre (Edinburgh/Scotland, United Kingdom)
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Contrast improvement with imperfect pre-coronagraph and dark-hole (2016)
  • Author(s): J. Nishikawa, M. Oya, N. Murakami, M. Tamura, T. Kurokawa, Y. Tanaka, S. Kumagai, T. Kotani
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Edinburgh International Conference Centre (Edinburgh/Scotland, United Kingdom)
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] 広帯域極限高コントラスト観測を目指した3 層8 分割位相マスクの開発 (2016)
  • Author(s): 村上尚史, 西川淳, Raphael Galicher, Pierre Baudoz, 小室佑介, 赤岩夏海, 馬場直志, 田村元秀
  • Organizer: 日本天文学会2016年春季年会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2016-03-14
• [Presentation] WFIRST-AFTAコロナグラフ用偏光補正デバイスの設計 (2015)
  • Author(s): 村上尚史, Wesley A. Traub, John T. Trauger, Hong Tang, 田村元秀, WACO ワーキンググループ
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] サバール板横シヤリングナル干渉計による原始惑星系円盤観測の計算機シミュレーション (2015)
  • Author(s): 米田謙太，村上尚史，武藤恭之，河原創，松尾太郎，小谷隆行，馬場直志，田村元秀
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] Low-contrast Pre-Coronagraph(LPC) とSpeckle Area Nulling (SAN) (2015)
  • Author(s): 西川淳，大矢正人，村上尚史, 田村元秀, 黒川隆志, 田中洋介, 堀江正明, 熊谷紫麻見, 小谷隆行
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 瞳再配置型光学系による位相マスクコロナグラフの実証実験 (2015)
  • Author(s): 赤岩夏海, 村上尚史, 西川淳, 田村元秀, 馬場直志
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] 系外惑星の直接視線速度観測に向けた分光コロナグラフの性能評価 (2015)
  • Author(s): 高橋瑞樹, 村上尚史, 河原創, 小谷隆行, 松尾太郎, 馬場直志
  • Organizer: 日本天文学会2015年秋季年会
  • Place of Presentation: 甲南大学（兵庫県神戸市）
  • Year and Date: 2015-09-09
• [Presentation] Numerically designed phase-mask for stellar coronagraph (2015)
  • Author(s): N. Baba, N. Murakami, N. Miura, M. Tamura
  • Organizer: SPIE Conference: Optics + Photonics
  • Place of Presentation: San Diego Convention Center (San Diego/ USA)
  • Year and Date: 2015-08-10
  • Int'l Joint Research
• [Presentation] 瞳再配置型位相マスクコロナグラフの提案 (2015)
  • Author(s): 村上尚史, 赤岩夏海, 馬場直志, 西川淳, 田村元秀
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] WFIRST/AFTA Coronagraph（WACO） (2015)
  • Author(s): 田村元秀，村上尚史，馬場直志，西川淳，小谷隆行，成田憲保，塩谷圭吾，O. Guyon，河原創，權靜美，松尾太郎，住貴宏，山田亨，ほかWFIRSTチーム
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] ステラコロナグラフ用位相マスクの数値的デザイン (2015)
  • Author(s): 馬場直志, 村上尚史, 三浦則明, 田村元秀
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 超高コントラスト系外惑星直接撮像のための非対称ナル干渉法とダークホール制御 (2015)
  • Author(s): 西川淳, 大矢正人, 村上尚史,小谷隆行, 田村元秀, 熊谷紫麻見, 田中洋介, 黒川隆志
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] 系外惑星直接観測のためのSpeckle Area Nulling を用いたダークホール制御 (2015)
  • Author(s): 大矢正人, 西川淳, 堀江正明,佐藤克磨, 村上尚史, 小谷隆行,田村元秀, 熊谷紫麻見, 田中洋介,黒川隆志
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] Savart-plate lateral-shearing interferometric nuller towards high-contrast imaging of exoplanets (2015)
  • Author(s): 村上尚史
  • Organizer: 平成26年度 系外惑星大研究会
  • Place of Presentation: 東京大学（東京都文京区）
  • Year and Date: 2015-03-02 – 2015-03-03
• [Presentation] 複数の軸対称偏光素子を利用した白色光渦およびリング状光格子の生成 (2014)
  • Author(s): 岡和彦，坂本盛嗣，森田隆二，村上尚史
  • Organizer: Optics & Photonics Japan
  • Place of Presentation: 筑波大学東京キャンパス文京校舎（東京都文京区）
  • Year and Date: 2014-11-05 – 2014-11-07
  • Invited
• [Presentation] 系外惑星直接観測のためのダークホールアルゴリズムによる補償光学制御 (2014)
  • Author(s): 大矢正人，西川淳，堀江正明，佐藤克麿，村上尚史，小谷隆行，熊谷紫麻見，田村元秀，田中洋介，黒川隆志
  • Organizer: Optics & Photonics Japan
  • Place of Presentation: 筑波大学東京キャンパス文京校舎（東京都文京区）
  • Year and Date: 2014-11-05 – 2014-11-07
• [Presentation] 系外惑星の分光直接検出のためのSpectroscopic Coronagraph (2014)
  • Author(s): 河原創，村上尚史，松尾太郎，小谷隆行
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学（山形県山形市）
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] Recent progress on phase-mask coronagraphy based on photonic-crystal technology (2014)
  • Author(s): N. Murakami, J. Nishikawa, M. Tamura, E. Serabyn, W. A. Traub, K. M. Liewer, D. C. Moody, J. T. Trauger, O. Guyon, F. Martinache, N. Jovanovic, G. Singh, F. Oshiyama, H. Shoji, M. Sakamoto, S. Hamaguchi, K. Oka, N. Baba
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Palais des congres de Montreal (Montreal/Canada)
  • Year and Date: 2014-06-22 – 2014-06-27
• [Presentation] Laboratory demonstration of the Savart-plate lateral-shearing interferometric nuller for exoplanets (SPLINE) (2014)
  • Author(s): H. Kitou, N. Murakami, M. Kida, N. Baba, T. Matsuo, T. Kotani, H. Kawahara, M. Tamura
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Palais des congres de Montreal (Montreal/Canada)
  • Year and Date: 2014-06-22 – 2014-06-27
• [Presentation] A coronagraph system with unbalanced nulling interferometer: progress of optics and control method (2014)
  • Author(s): J. Nishikawa, M. Oya, M. Horie, K. Sato, M. Fukase, N. Murakami, T. Kotani, S. Kumagai, M. Tamura, Y. Tanaka, T. Kurokawa
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Palais des congres de Montreal (Montreal/Canada)
  • Year and Date: 2014-06-22 – 2014-06-27
• [Presentation] Adaptive optics operation with focal wavefront sensor in a coronagraph for direct observation of exoplanets (2014)
  • Author(s): M. Oya, J. Nishikawa, M. Horie, K. Sato, M. Fukase, N. Murakami, T. Kotani, S. Kumagai, M. Tamura, Y. Tanaka, T. Kurokawa
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Palais des congres de Montreal (Montreal/Canada)
  • Year and Date: 2014-06-22 – 2014-06-27
• [Presentation] High-contrast planet imager for Kyoto 4-m segmented telescope (2014)
  • Author(s): T. Matsuo, N. Murakami, T. Kotani, H. Kawahara, N. Natsume, M. Kino, H. Imada, M. Kurita, M. Iribe, H. Nishida, et al.
  • Organizer: SPIE Conference: Astronomical Telescopes + Instrumentation
  • Place of Presentation: Palais des congres de Montreal (Montreal/Canada)
  • Year and Date: 2014-06-22 – 2014-06-27