Study on beam shaping of laser diodes using Lloyd's mirror interference

• Project/Area Number: 22560043
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied optics/Quantum optical engineering
• Research Institution: Okayama Prefectural University
• Principal Investigator: FUKUSHIMA Takehiro 岡山県立大学, 情報工学部, 准教授 (00264911)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
• Keywords: 半導体レーザ / ビーム整形 / ロイドのミラー干渉 / ビーム品質 / 遠視野像 / 光結合系 / ビームアスペクト比

Research Abstract

We applied our beam shaping method to three kinds of laser diodes which have different lasing wavelength and different beam divergence angle. Elliptical beams emitted from the laser diodes were successfully transformed to nearly circular beams using a single substrate mirror. The dependence of the beam shape on the lasing characteristics was investigated numerically. Moreover beam quality factor of the tailored beam was observed and found to be as good as 1.24. We proposed an optical coupling system between a laser diode and an optical fiber based on the beam shaping method and estimated the coupling efficiency.

Research Products

• [Journal Article] Quality factor of circular laser diode beam tailored by optical interference (2012)
  • Author(s): T. Fukushima, K. Sakaguchi, and Y. Tokuda
  • Journal Title: Opt. Rev Volume: Vol. 19 Pages: 328-331
  • NAID: 10031117578
  • Peer Reviewed
• [Journal Article] Quality factor of circular laser diode beam tailored by optical interference (2012)
  • Author(s): T. Fukushima
  • Journal Title: Optical Review Volume: 19 Issue: 5 Pages: 328-331
  • DOI: 10.1007/s10043-012-0050-6
  • NAID: 10031117578
  • Peer Reviewed
• [Journal Article] Laser diode beam shaping by optical interference (2011)
  • Author(s): T. Fukushima, K. Sakaguchi, and Y. Tokuda
  • Journal Title: Opt. Rev Volume: Vol. 18 Pages: 287-292
  • NAID: 10028211050
  • Peer Reviewed
• [Journal Article] Laser diode beam shaping by optical interference (2011)
  • Author(s): T.Fukushima, K.Sakaguchi, Y.Tokuda
  • Journal Title: Optical Review Volume: 18 Issue: 3 Pages: 287-292
  • DOI: 10.1007/s10043-011-0056-5
  • NAID: 10028211050
  • Peer Reviewed
• [Presentation] ロイドのミラー干渉を利用した半導体レーザと光ファイバの結合系 (2013)
  • Author(s): 福嶋丈浩
  • Organizer: 第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2013-09-12
• [Presentation] 干渉を利用した半導体レーザと光ファイバの結合系の評価 (2013)
  • Author(s): 福嶋丈浩
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学
  • Year and Date: 2013-03-27
• [Presentation] Lloydのミラー干渉で整形されたLDビームの品質因子測定 (2012)
  • Author(s): 福嶋丈浩
  • Organizer: 第59回応用物理学関係連合講演会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2012-03-18
• [Presentation] ロイドのミラー干渉で整形された半導体レーザービームの特性 (2011)
  • Author(s): 福嶋丈浩
  • Organizer: レーザー学会第423回研究会報告
  • Place of Presentation: 大阪府立大学中之島サテライト
  • Year and Date: 2011-12-26
• [Presentation] ロイドのミラー干渉を利用したLDビーム整形の発振特性依存性 (2011)
  • Author(s): 福嶋丈浩
  • Organizer: 2011年電子情報通信学会ソサイエティ大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2011-09-16
• [Presentation] Quality factor of laser diode beam tailored by Lloyd's mirror interference (2011)
  • Author(s): T. Fukushima
  • Organizer: CLEO Pacific Rim 2011
  • Place of Presentation: オーストラリア,シドニー
  • Year and Date: 2011-08-29
• [Presentation] Quality factor of laser diode beam tailored by Lloyd's mirror interference (2011)
  • Author(s): T.Fukushima, K.Sakaguchi, Y.Tokuda
  • Organizer: CLEO Pacific Rim 2011
  • Place of Presentation: オーストラリア、シドニー
  • Year and Date: 2011-08-29
• [Presentation] 干渉を利用した高アスペクト比楕円ビームLDのパターン整形 (2011)
  • Author(s): 福嶋丈浩
  • Organizer: 第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学
  • Year and Date: 2011-03-24
• [Presentation] 干渉を利用した高アスペクト比楕円ビームLDのパターン整形 (2011)
  • Author(s): 福嶋丈浩、坂口浩一郎、徳田安紀
  • Organizer: 第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学(注:震災のため講演会は中止になったが発表は成立した)
  • Year and Date: 2011-03-24
• [Presentation] 干渉を利用した半導体レーザビーム整形の発振特性依存性 (2011)
  • Author(s): 葛原優
  • Organizer: 第13回IEEE広島支部学生シンポジウム
  • Place of Presentation: 広島大学
• [Presentation] Tailoring the beam profile of an 808-nm pump laser diode using Lloyd's mirror interference (2010)
  • Author(s): T. Fukushima
  • Organizer: Frontiers in Optics 2010
  • Place of Presentation: アメリカ合衆国,ロチェスター
  • Year and Date: 2010-11-26
• [Presentation] Tailoring the beam profile of an 808-nm pump laser diode using Lloyd's mirror interference (2010)
  • Author(s): T.Fukushima, et.al
  • Organizer: Frontiers in Optics 2010
  • Place of Presentation: Rochester convention center, Rochester USA
  • Year and Date: 2010-10-26
• [Presentation] ロイドのミラー干渉を用いた808nm励起用半導体レーザのビーム整形 (2010)
  • Author(s): 福嶋丈浩
  • Organizer: 第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学文教キャンパス
  • Year and Date: 2010-09-14
• [Presentation] ロイドのミラー干渉を利用した半導体レーザと光ファイバの結合系
  • Author(s): 福嶋丈浩
  • Organizer: 第７３回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学
• [Presentation] 干渉を利用した半導体レーザと光ファイバの結合系の評価
  • Author(s): 福嶋丈浩
  • Organizer: 第６０回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学