Amplitude metrics for field retrieval with hard-edged and uniformly illuminated apertures [0.03%]
具有硬边缘和均匀照明孔径的场检索的幅度指标
Samuel T Thurman,Ryan T DeRosa,James R Fienup
Samuel T Thurman
In field retrieval, the amplitude and phase of the generalized pupil function for an optical system are estimated from multiple defocused measurements of the system point-spread function. A baseline field reconstruction algorithm optimizing...
Numerical and experimental results for focusing of three-dimensional electromagnetic waves into uniaxial crystals [0.03%]
三维电磁波聚焦进一轴晶体的数值和实验结果
Momodou Jain,Jon Kåre Lotsberg,Jakob J Stamnes et al.
Momodou Jain et al.
We present experimental results for focusing of a three-dimensional electromagnetic wave through a plane interface into two different uniaxial crystals, a positive MgF2 crystal and a negative LiNbO3 crystal. These results are compared with ...
Cross talk elimination using an aperture for recording elemental images of integral photography [0.03%]
用于整体摄影记录元素图像的孔径消混响技术
Kenji Yamamoto,Tomoyuki Mishina,Ryutaro Oi et al.
Kenji Yamamoto et al.
A major problem with integral photography using a lens array is overlapping recordings (cross talk) between elemental images. Another problem is the decrease in the number of pixels in the elemental images. We describe two methods (includin...
Experimental demonstration of ultrasharp unpolarized filtering by resonant gratings at oblique incidence [0.03%]
应用于斜入射的共振光栅实验演示超尖锐非偏振滤波器
Olga Boyko,Fabien Lemarchand,Anne Talneau et al.
Olga Boyko et al.
The peaks in the reflectivity spectrum of waveguide gratings observed when the incident beam couples to a mode of the structure are promising features for many applications. However their weak angular tolerance and their strong polarization...
Radiative transfer: exact Rayleigh scattering series and a daylight formula [0.03%]
辐射传输：瑞利散射的精确级数和日光公式
J H Hannay
J H Hannay
Daylight, or sky light, is sunlight Rayleigh scattered by the atmosphere onto the ground. This random scattering propagation through clear air is well described by "radiative transfer." Beyond the single scattering approximation, algorithms...
Efficient high-order evaluation of scattering by periodic surfaces: deep gratings, high frequencies, and glancing incidences [0.03%]
高效评价周期表面散射的高阶方法：深光栅、高频和掠入射问题分析
Oscar P Bruno,Michael C Haslam
Oscar P Bruno
We present a superalgebraically convergent integral equation algorithm for evaluation of TE and TM electromagnetic scattering by smooth perfectly conducting periodic surfaces z=f(x). For grating-diffraction problems in the resonance regime ...
Multiwavelength narrowband high-reflection filters with low-reflection sidebands [0.03%]
具有低反射边带的多波长窄带高反滤波器
Yonggang Wu,Lianxiao Fu,Donggong Peng et al.
Yonggang Wu et al.
We propose a novel method for the construction of multiwavelength narrowband high-reflection filters consisting of a reflection mirror, a middle structure, and an induced-reflection match stack (IRMS). The results show that the peak positio...
Proposal and analysis of two-cavity Fabry-Perot structures based on fiber Bragg gratings [0.03%]
基于光纤布拉格光栅的双腔法布里-珀罗结构的设计与分析
Ou Xu,Shaohua Lu,Suchun Feng et al.
Ou Xu et al.
An all-fiber two-cavity Fabry-Perot (FP) configuration based on fiber Bragg gratings (FBGs) is proposed. The characteristics of transmission spectra for the two-cavity FP structure are theoretically analyzed and comprehensively modeled. The...
Stephen H Simpson,Simon Hanna
Stephen H Simpson
It is well known that Laguerre-Gaussian beams carry angular momentum and that this angular momentum has a mechanical effect when such beams are incident on particles whose refractive indices differ from those of the background medium. Under...
Farhad Moghareh Abed,Seyed Hossein Amirshahi,Mohammad Reza Moghareh Abed
Farhad Moghareh Abed
A linear interpolation method is applied for reconstruction of reflectance spectra of Munsell as well as ColorChecker SG color chips from the corresponding colorimetric values under a given set of viewing conditions. Hence, different types ...