A new analytical method based on the surface plasmon resonance （SPR） technique is presented, with which SPR curves for both wavelength and angular modulations can be obtained simultaneously via only a single scan of...A new analytical method based on the surface plasmon resonance （SPR） technique is presented, with which SPR curves for both wavelength and angular modulations can be obtained simultaneously via only a single scan of the incident angle. Using this method, the SPR responses of TiO2-coated Cu films are characterized in the wavelength range from 600 nm to 900 nm. For the first time, we determine the effective optical constants and the thicknesses of TiO2-coated Cu films using the SPR curves of wavelength modulation. The sensitivities of prism-based SPR refractive index sensors using TiO2-coated Cu films are investigated theoretically for both wavelength and angular modulations, the results show that in the case of sensitivity with wavelength modulation, TiO2-coated Cu films are not as good as the Au film, however, they are more suitable than the Au film for SPR refractive index sensors with angular modulation because a higher sensitivity can be achieved.展开更多
We propose to use wavelength modulation approach,i.e.,the spectroscopy of a surface plasmon in the frequency domain,to characterize the optical dispersion property of gold film.Using this method,we determine the dispe...We propose to use wavelength modulation approach,i.e.,the spectroscopy of a surface plasmon in the frequency domain,to characterize the optical dispersion property of gold film.Using this method,we determine the dispersion relationship of gold film in a wavelength range from 537.12 nm to 905.52 nm,and our results accord well with the reported results by other authors.This method is particularly suited for studying the optical dispersion properties of thin metal films,because a series of dielectric constants over a wide spectral range can be determined simultaneously via only a single scan of the incident angle,thereby avoiding the repeated measurements required when using the angular modulation approach.展开更多
数字化信息系统实验室(Digital Information System Laboratory)(简称DISLab)的引入可以简化物理实验的操作、加快数据采集与处理的速度并提高精度,因此,将DISLab用于课堂演示和微课制作,可以使抽象的理论更加形象化、实验过程动态化,...数字化信息系统实验室(Digital Information System Laboratory)(简称DISLab)的引入可以简化物理实验的操作、加快数据采集与处理的速度并提高精度,因此,将DISLab用于课堂演示和微课制作,可以使抽象的理论更加形象化、实验过程动态化,更易于学生对知识的理解和接受。本文以向心力研究实验为例,说明了通过DISLab实验的微课的设计和录制,可以训练物理师范生从学生视角出发,设计教学内容和教学思想、引导学生跟随实验过程进行思考,提高物理师范生的教学技能。展开更多
We propose a wideband transverse magnetic-reflected polarizing film composed of Cr and SiO2. Based on the polarization characteristics of reflected light from Cr/SiO2 film, the film can serves as a polarizer to severe...We propose a wideband transverse magnetic-reflected polarizing film composed of Cr and SiO2. Based on the polarization characteristics of reflected light from Cr/SiO2 film, the film can serves as a polarizer to severely attenuate the transverse electric （TE）-polarized light and reflect the transverse magnetic （TM）- polarized light in a wavelength range from 600 to 900 nm. By suitably choosing the film thicknesses, the operation angles of such polarizers can be adjusted over a wide angle range greater than the critical angle of total reflection. Cr/SiO2 film has potential use in surface plasmon resonance （SPR） sensors based on Kretchmann configuration to form integrated structures.展开更多
基金the National Natural Science Foundation of China(Grant No.61177079)the Young Scientists Fund of the National Natural Science Foundation of China(Grant No.61205071)
文摘A new analytical method based on the surface plasmon resonance （SPR） technique is presented, with which SPR curves for both wavelength and angular modulations can be obtained simultaneously via only a single scan of the incident angle. Using this method, the SPR responses of TiO2-coated Cu films are characterized in the wavelength range from 600 nm to 900 nm. For the first time, we determine the effective optical constants and the thicknesses of TiO2-coated Cu films using the SPR curves of wavelength modulation. The sensitivities of prism-based SPR refractive index sensors using TiO2-coated Cu films are investigated theoretically for both wavelength and angular modulations, the results show that in the case of sensitivity with wavelength modulation, TiO2-coated Cu films are not as good as the Au film, however, they are more suitable than the Au film for SPR refractive index sensors with angular modulation because a higher sensitivity can be achieved.
基金Project supported by the National Natural Science Foundation of China (Grant No. 61177079)the Open Fund of Key Laboratory of Electronics Engineering,College of Heilongjiang Province,China (Grant No. DZZD20100014)the Youth Science Foundation of Heilongjiang University,China (Grant No. QL200914)
文摘We propose to use wavelength modulation approach,i.e.,the spectroscopy of a surface plasmon in the frequency domain,to characterize the optical dispersion property of gold film.Using this method,we determine the dispersion relationship of gold film in a wavelength range from 537.12 nm to 905.52 nm,and our results accord well with the reported results by other authors.This method is particularly suited for studying the optical dispersion properties of thin metal films,because a series of dielectric constants over a wide spectral range can be determined simultaneously via only a single scan of the incident angle,thereby avoiding the repeated measurements required when using the angular modulation approach.
文摘数字化信息系统实验室(Digital Information System Laboratory)(简称DISLab)的引入可以简化物理实验的操作、加快数据采集与处理的速度并提高精度,因此,将DISLab用于课堂演示和微课制作,可以使抽象的理论更加形象化、实验过程动态化,更易于学生对知识的理解和接受。本文以向心力研究实验为例,说明了通过DISLab实验的微课的设计和录制,可以训练物理师范生从学生视角出发,设计教学内容和教学思想、引导学生跟随实验过程进行思考,提高物理师范生的教学技能。
基金supported by the National Natural Science Foundation of China(No.61177079)the Young Scientists Fund of the National Natural Science Foundation of China(No.61205071.)
文摘We propose a wideband transverse magnetic-reflected polarizing film composed of Cr and SiO2. Based on the polarization characteristics of reflected light from Cr/SiO2 film, the film can serves as a polarizer to severely attenuate the transverse electric （TE）-polarized light and reflect the transverse magnetic （TM）- polarized light in a wavelength range from 600 to 900 nm. By suitably choosing the film thicknesses, the operation angles of such polarizers can be adjusted over a wide angle range greater than the critical angle of total reflection. Cr/SiO2 film has potential use in surface plasmon resonance （SPR） sensors based on Kretchmann configuration to form integrated structures.
