公开(公告)号：US20150177140A1

公开(公告)日：2015-06-25

申请号：US14617635

申请日：2015-02-09

Applicant: JUNPENG GUO

Inventor： JUNPENG GUO

IPC: G01N21/552 ,  G01J3/18

CPC classification number: G01N21/554 ,  G01J3/1804 ,  G01N21/658 ,  G01N2201/02 ,  G01N2201/06113 ,  G02B5/008 ,  G02B5/18 ,  G02B5/1809

Abstract: The present disclosure pertains to metal or dielectric nanostructures of the subwavelength scale within the grating lines of optical diffraction gratings. The nanostructures have surface plasmon resonances or non-plasmon optical resonances. A linear photodetector array is used to capture the resonance spectra from one of the diffraction orders. The combined nanostructure super-grating and photodetector array eliminates the use of external optical spectrometers for measuring surface plasmon or optical resonance frequency shift caused by the presence of chemical and biological agents. The nanostructure super-gratings can be used for building integrated surface enhanced Raman scattering (SERS) spectrometers. The nanostructures within the diffraction grating lines enhance Raman scattering signal light while the diffraction grating pattern of the nanostructures diffracts Raman scattering light to different directions of propagation according to their wavelengths. Therefore, the nanostructure super-gratings allows for the use of a photodetector array to capture the surface enhanced Raman scattering spectra.

Abstract translation: 本公开涉及在光学衍射光栅的光栅线内的亚波长标尺的金属或电介质纳米结构。 纳米结构具有表面等离子体共振或非等离子体光学共振。 线性光电检测器阵列用于从一个衍射级捕获共振光谱。 组合的纳米结构超光栅和光电检测器阵列消除了使用外部光谱仪来测量由化学和生物试剂的存在引起的表面等离子体激元或光学共振频移。 纳米结构超光栅可用于构建集成表面增强拉曼散射（SERS）光谱仪。 衍射光栅线内的纳米结构增强拉曼散射信号光，而纳米结构的衍射光栅图样根据其波长将拉曼散射光衍射到不同的传播方向。 因此，纳米结构超光栅允许使用光电检测器阵列来捕获表面增强的拉曼散射光谱。