Development of novel fiber-based light sources for coherent Raman scattering imaging

开发用于相干拉曼散射成像的新型光纤光源

• 批准号: 23760055
• 负责人: FURUSAWA Kentaro
• 金额: $ 2.91万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760055/
• 关键词: レーザ; 近接場光学顕微鏡; 非線形振動分光; プラズモン; ファイバ光源; 国際情報交流

This research focused on the development of novel fiber sources for rapid and stable spectral imaging in a coherent Raman scattering microscope. An optical parametric oscillator as well as a stable supercontinuum source were developed using a highly nonlinear optical fibers with their zero dispersion wavelengths tuned to near-infrared wavelengths. Having established the light sources, a coherent anti-Stokes Raman scattering (CARS) microscope and a near-field CARS microscope were developed. CARS spectra of DNA constituent molecules in the finger-print region were measured without modifying the group delay between the pump and the Stokes pulses, significantly decreasing the data acquisition time. Moreover, high resolution CARS imaging was realized for an isolated single-walled carbon nanotube with spatial resolution of 60 nm and spectral resolution of 30 cm^<-1>. These results were published in a scientific literature.

这项研究的重点是开发新型光纤源，以在相干拉曼散射显微镜中实现快速稳定的光谱成像。使用高度非线性光纤开发了光学参量振荡器以及稳定的超连续谱源，其零色散波长调谐到近红外波长。建立光源后，开发了相干反斯托克斯拉曼散射（CARS）显微镜和近场 CARS 显微镜。在不修改泵和斯托克斯脉冲之间的群延迟的情况下测量了指纹区域中 DNA 组成分子的 CARS 光谱，从而显着减少了数据采集时间。此外，对孤立的单壁碳纳米管实现了空间分辨率为60 nm、光谱分辨率为30 cm^-1 的高分辨率CARS成像。这些结果发表在科学文献中。

项目成果

Highly sensitive tip-enhance nanoscopy and its applications to ultrafast spectroscopy

高灵敏尖端增强纳米显微镜及其在超快光谱中的应用

• 发表时间: 2012
• 作者: N. Hayazaw;K. Furusawa;S. Kawata
• 通讯作者: S. Kawata

Magnetic assembly of gold core-shell necklace resonators

• DOI: 10.1063/1.4706254
• 发表时间: 2012-04-30
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Aoki, Kanna;Furusawa, Kentaro;Tanaka, Takuo
• 通讯作者: Tanaka, Takuo

Challa S. S. R. Kumar ed., "Raman Spectroscopy for Nanomaterials Characterization,"

Challa S.S.R. Kumar 编辑，“纳米材料表征的拉曼光谱”，

• 发表时间: 2012
• 作者: N. Hayazawa;A. Tarun;A. Taguchi;K. Furusawa
• 通讯作者: K. Furusawa

Nanometric locking of the tight focus for optical microscopy and tip-enhanced microscopy

• DOI: 10.1088/0957-4484/23/46/465203
• 发表时间: 2012-11-23
• 期刊: NANOTECHNOLOGY
• 影响因子: 3.5
• 作者: Hayazawa, N.;Furusawa, K.;Kawata, S.
• 通讯作者: Kawata, S.

Generation of broadband longitudinal fields for applications to ultrafast tip-enhanced near-field microscopy

产生应用于超快尖端增强近场显微镜的宽带纵向场

• DOI: 10.1364/oe.19.025328
• 发表时间: 2011
• 期刊: Optics Express
• 影响因子: 3.8
• 作者: K.Furusawa;N.Hayazawa;T.Okamoto;T.Tanaka;S.Kawata
• 通讯作者: S.Kawata