Optical resonances in single microdroplets levitated in an ion trap

离子阱中悬浮的单个微滴的光学共振

• 批准号: 11640401
• 负责人: KIMURA Masahiro
• 金额: $ 2.05万
• 依托单位: Kochi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640401/
• 关键词: Microcavity; Microparticle; Ion trap; Laser action; Mie scattering; MDR; 微小共振器; 色素レーザー

We have studied resonant light scattering from a single micro-droplet and discussed the laser action of the droplet doped with dye molecules. Since photons confined inside the droplet correspond to electrons bound in an atom, such droplets are sometimes called photonic atoms.In our experiment, a single droplet of glycerol doped with dye molecules was levitated in an ion trap. The droplet was optically excited by a pump laser, and the emission from the droplet was observed through an optical spectrometer and a microscope. Since the droplet levitated in the ion trap is naturally shaped to an almost real sphere, some resonant modes of the light waves are very efficiently confined in the droplet and the comparison with theory can be made more rigorously compared to using solid spheres. The Q-value of the resonator is extremely high. This lowers the threshold for the lasing of the droplet.In order to investigate the characteristics of the lasing action, we have made the followingmeasurements :1) Dependence on the power of exciting laser2) Polarization properties3) Dependence on the concentration of dye molecules.From these measurements we have determined the modes of laser radiation and discussed the lasing mechanism.

我们研究了单个微滴的共振光散射，并讨论了掺杂染料分子的液滴的激光作用。由于限制在液滴内的光子对应于原子中束缚的电子，因此此类液滴有时被称为光子原子。 在我们的实验中，掺杂有染料分子的甘油单滴在离子阱中悬浮。通过泵浦激光器对液滴进行光学激发，并通过光谱仪和显微镜观察液滴的发射。由于离子阱中悬浮的液滴自然地形成几乎真实的球体，因此光波的一些共振模式被非常有效地限制在液滴中，并且与使用实心球体相比，可以更严格地与理论进行比较。谐振器的 Q 值非常高。这降低了液滴发射激光的阈值。为了研究激光作用的特征，我们进行了以下测量：1）对激发激光功率的依赖性2）偏振特性3）对染料分子浓度的依赖性。根据这些测量，我们确定了激光辐射的模式并讨论了激光发射机制。

项目成果

M.Tona, M.Kimura: "Optical spectroscopy and microscopy of a single dye-doped microdroplet levitated in an ion trap"Mat.Res.Soc.Symp.Proc.. 637,E. 5.20.1-5.20.6 (2001)

M.Tona、M.Kimura：“离子阱中悬浮的单一染料掺杂微滴的光学光谱和显微镜检查”Mat.Res.Soc.Symp.Proc.. 637，E。

M.Tona,and M.Kimura: "Optical spectroscopy and microscopy of a single dye-doped microdroplet levitated in an ion trap"MRS Proceedings, Symposium E. 637. 5-20 (2000)

M.Tona 和 M.Kimura：“离子阱中悬浮的单一染料掺杂微滴的光学光谱和显微镜检查”MRS 论文集，研讨会 E. 637. 5-20 (2000)

M.Tona, M.Kimura: "Optical spectroscopy and microscopy of a single dye-doped microdroplet levitated in an ion trap"Mat.Res.Soc.Symp.Proc.. 637・E. E5.20.1-E5.20.6 (2001)

M.Tona、M.Kimura：“离子阱中悬浮的单个染料掺杂微滴的光学光谱和显微镜”Mat.Res.Soc.Symp.Proc.. 637・E5.20.1-E5.20.6（2001 年） ）

戸名正英,木村正広: "イオントラップに捕捉した単一微小液滴の分光特性"日本物理学会講演概要集. 55巻1号. 121-121 (2000)

Masahide Toma、Masahiro Kimura：“离子阱中捕获的单个微滴的光谱特征”日本物理学会摘要，第 55 卷，第 1. 121-121 期（2000 年）。

M, Tona. And M, Kimura: "Polarization Effects Both in Emission Spectra and in Microscopic Images of Lasing Microdroplets Levitated in an Ion Trap"J. Phys. Soc. Jpn. 71, 2. 425-428 (2002)

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