Room-temperature Bose-Einstein condensation of exciton polaritons in an organic dye nanofiber

2014 Fiscal Year Final Research Report

• Project/Area Number: 24540333
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: National Institute for Materials Science
• Principal Investigator: TAKAZAWA Ken 独立行政法人物質・材料研究機構, 先端フォトニクス材料ユニット, 主幹研究員 (10354317)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ボーズ凝縮 / 励起子ポラリトン / ナノファイバー / 有機色素 / 光共振器 / レーザー分光

Outline of Final Research Achievements

We attempted to realize Bose condensation of exciton polaritons using organic dye nanofibers that propagate exciton polaritons. First, we developed a technique to micromanipulate nanofibers on a substrate. Using the technique, we constructed a ring resonator (Q > 4,000) by jointing the both tips of a nanofiber. To observe Bose condensation, we excited the ring resonator with an intense pulsed laser beam. Although we have not succeeded in observing the condensation till now, we found several new phenomena concerning propagation of exciton polaritons along the nanofibers. These findings will lead to novel nanophotonics technologies.

Free Research Field

光物性