Development of mid-infrared hollow core waveguide for GIGMICS on the new telescope at Haleakala

2022 Fiscal Year Final Research Report

• Project/Area Number: 19H01950
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 17010:Space and planetary sciences-related
• Research Institution: Nagoya University
• Principal Investigator: HIRAHARA Yasuhiro 名古屋大学, 環境学研究科, 准教授 (30252224)
• Co-Investigator(Kenkyū-buntansha): 松浦 祐司 東北大学, 医工学研究科, 教授 (10241530) ; 鍵谷 将人 東北大学, 理学研究科, 助教 (30436076) ; 中川 広務 東北大学, 理学研究科, 助教 (30463772)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 中空ファイバー / 中間赤外線 / 分子分光学 / 振動スペクトル / 高分散分光観測 / 惑星大気化学

Outline of Final Research Achievements

Characterization of a new type of hollow fiber for highly efficient and stable optical coupling between a mid-infrared high dispersion spectrograph (GIGMICS), which operates under liquid nitrogen temperature cooling, and an optical-infrared telescope PLANETS, which uses a 1.85 mφ aperture off-axis parabolic plane as a primary mirror, and a new type of hollow fiber for infrared cooling. evaluation. For this purpose, a new type of associate common optical path wavefront-dividing phase-shifting interferometer was introduced to quantitatively characterize the properties of the infrared hollow fiber and its performance was evaluated. We also produced and evaluated the performance of the world's first 1D hollow fiber bundle using a microlens array, coherent laser light, and various incoherent light sources.

Free Research Field

赤外線天文学

Academic Significance and Societal Importance of the Research Achievements

赤外線中空ファイバーは生体内での赤外線計測や高出力レーザー光照射等の医療目的で開発された比較的新しいデバイスである。本研究で取り組んだ詳細な性能評価の結果と、それに必要な周辺の機器開発によって、このユニークな中空ファイバーが従来の中間赤外線多結晶ファイバーに比べて高い透過効率とFlexibilityを有し、赤外線天文観測装置の結合や惑星探査機搭載の赤外線計測装置内部の赤外線光学系への高い応用可能性を初めて示した。