TN827.1 98053495毫米波平面衍射天线的光学原理=Optical princi—ple of the millimeter—wave plalle—diffractingantennas[刊,中]/樊仲维,卢振武,廖江红(中科院长春光机所应用光学国家重点实验室。吉林,长春(130022))∥自然科学进...TN827.1 98053495毫米波平面衍射天线的光学原理=Optical princi—ple of the millimeter—wave plalle—diffractingantennas[刊,中]/樊仲维,卢振武,廖江红(中科院长春光机所应用光学国家重点实验室。吉林,长春(130022))∥自然科学进展。—1997,7(6).—682—687基于标量衍射理论,应用衍射光学技术。展开更多
A Smith-Purcell (SP) free electron laser (FEL) ,composed of a metallic diffraction flat grating,an open cylindrical mirror cavity and a relativistic sheet electron beam with moderate energy, is presented. The char...A Smith-Purcell (SP) free electron laser (FEL) ,composed of a metallic diffraction flat grating,an open cylindrical mirror cavity and a relativistic sheet electron beam with moderate energy, is presented. The characteristics of this device are studied by theoretical analysis,experimental measurements and particle-in-cell (PIO) simulation method. Results indicate that the coherent radiation with an output peak power up to 50 MW at millimeter wavelengths can be generated by using relativistic electron beam of moderate energy.展开更多
As for single mode symmetric step refractive index structure dielectric planar optical waveguide, when its output end is restricted, the diffractive field distribution is derived. It can be expressed as the convolutio...As for single mode symmetric step refractive index structure dielectric planar optical waveguide, when its output end is restricted, the diffractive field distribution is derived. It can be expressed as the convolution between the Dirac function and the Sinc and Lorenz functions. It is helpful to deepen the recognition of the restricted diffraction. The characteristic of the diffractive field is discussed. The variational curve of the full angle width at half maximum intensity of central bright fringe versus the half width of slit is presented by numerical calculation, and the fitting curve with the exponential function is close to it.展开更多
O431 2001010001杨氏双缝实验光强分布的Fourier变换计算方法=Calculation of intensity distribution of light forexperiment of Young’s double slits by methodof Fourier transform[刊,中]/关智武(郑州工业大学数理力学系.河南,郑...O431 2001010001杨氏双缝实验光强分布的Fourier变换计算方法=Calculation of intensity distribution of light forexperiment of Young’s double slits by methodof Fourier transform[刊,中]/关智武(郑州工业大学数理力学系.河南,郑州(450002)),孙长庚(华北水利水电学院信息工程系.河南,郑州(450045))∥郑州工业大学学报.-2000,21(1).-81-82对于杨氏双缝这一著名的波动光学实验,依据平面波衍射理论(RSD理论),运用Fourier变换方法,计算杨氏双缝实验的光强分布。这种方法区别于一般文献中通过计算光程差来得出光强分布的方法,理论性较强。(赵桂云)展开更多
The relation between diffractive beam parameters and normalized frequency is analyzed that leads to two improved Tormulas for two kinds of mode-field halT-widths and several formulas for divergence angle as well as be...The relation between diffractive beam parameters and normalized frequency is analyzed that leads to two improved Tormulas for two kinds of mode-field halT-widths and several formulas for divergence angle as well as beam propagation factor. The numerical calculation indicates that the maximal relative error is less than 0.5% within a reasonable parameter range.展开更多
文摘针对目前二元光学元件掩模制作工艺过程的诸多不足,对连续型平面衍射聚光透镜掩模的激光直写制作工艺进行了研究。基于基尔霍夫标量衍射理论,采用光线追迹法设计了连续型平面衍射聚光透镜掩模。采用激光直写技术,利用CLW S-300M/C极坐标激光直写设备、S1830光刻胶和M ICROPO S IT-351显影液,进行了刻写实验。实验表明,激光能量、预烘烤温度、显影液浓度以及预曝光对掩模微结构的制作均有影响。最后制作了掩模。与二元光学元件掩模的制作工艺相比,该技术具有工艺简单、制作周期短且易于操作的优点。
文摘TN827.1 98053495毫米波平面衍射天线的光学原理=Optical princi—ple of the millimeter—wave plalle—diffractingantennas[刊,中]/樊仲维,卢振武,廖江红(中科院长春光机所应用光学国家重点实验室。吉林,长春(130022))∥自然科学进展。—1997,7(6).—682—687基于标量衍射理论,应用衍射光学技术。
文摘A Smith-Purcell (SP) free electron laser (FEL) ,composed of a metallic diffraction flat grating,an open cylindrical mirror cavity and a relativistic sheet electron beam with moderate energy, is presented. The characteristics of this device are studied by theoretical analysis,experimental measurements and particle-in-cell (PIO) simulation method. Results indicate that the coherent radiation with an output peak power up to 50 MW at millimeter wavelengths can be generated by using relativistic electron beam of moderate energy.
基金Natural Science Foundation of Fujian Province(A0540001)The Program of the Science and Technology Depart ment of Fujian Province(K04022)
文摘As for single mode symmetric step refractive index structure dielectric planar optical waveguide, when its output end is restricted, the diffractive field distribution is derived. It can be expressed as the convolution between the Dirac function and the Sinc and Lorenz functions. It is helpful to deepen the recognition of the restricted diffraction. The characteristic of the diffractive field is discussed. The variational curve of the full angle width at half maximum intensity of central bright fringe versus the half width of slit is presented by numerical calculation, and the fitting curve with the exponential function is close to it.
文摘O431 2001010001杨氏双缝实验光强分布的Fourier变换计算方法=Calculation of intensity distribution of light forexperiment of Young’s double slits by methodof Fourier transform[刊,中]/关智武(郑州工业大学数理力学系.河南,郑州(450002)),孙长庚(华北水利水电学院信息工程系.河南,郑州(450045))∥郑州工业大学学报.-2000,21(1).-81-82对于杨氏双缝这一著名的波动光学实验,依据平面波衍射理论(RSD理论),运用Fourier变换方法,计算杨氏双缝实验的光强分布。这种方法区别于一般文献中通过计算光程差来得出光强分布的方法,理论性较强。(赵桂云)
基金Supported by the Program of Fujian Education Department under Grant No. JB09069the Natural Science Fund of Fujian Province under Grant No. 2009J01275
文摘The relation between diffractive beam parameters and normalized frequency is analyzed that leads to two improved Tormulas for two kinds of mode-field halT-widths and several formulas for divergence angle as well as beam propagation factor. The numerical calculation indicates that the maximal relative error is less than 0.5% within a reasonable parameter range.