Development of tunable microlasers by the use of phase transition in droplets

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04642
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nano/Microsystems
• Research Institution: Ryukoku University
• Principal Investigator: SAITO Mitsunori 龍谷大学, 理工学部, 教授 (60205680)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: レーザ / 色素 / 散乱 / 相転移 / ポリエチレングリコール / 誘導放出

Outline of Final Research Achievements

Polyethylene glycol takes either the clear liquid phase or the white solid phase at around rooom temperature depending on whether it is heated or cooled (bistability). When fluorescent dye is dispersed in the solid phase, the strong scattering induces a laser emissiion due to the light confinement (random lasing). The strong scattering also increases the absorption of the excitation light, which leads to the enhancement of the fluorescence emission. High-efficiency fluorescent materials have been fabricated by the use of these chracteristics.

Free Research Field

光材料工学