Gradient Index (GRIN) Rod Lenses feature plane optical surfaces and achieve focus via a continuous change of the refractive index within the lens material. By eliminating complex geometries (such as aspherical surface figures) and carefully designing the lenses for specific working distances, these mic...
index n. 1.索引;(等于card index) 卡片索引(如图书馆中的) 2.(复数为indexes或indices)(物价或工资的)指数;[index (of sth)] (比喻)标志,表徵,量 Index,The (股票)指数见Financial Times Industrial Ordinary Share Index. gradient board 坡度牌 stocks/index 【经】 股票指数 stock/index 【经】 ...
We demonstrate an approach to realize gradient refractive index transformations in plasmonic sys- tems by adiabatically tailoring the modal index. This is accomplished through smooth height varia- tions in a dielectric cladding layer, thus minimizing parasitic scattering and reflections. We exper- i...
A double-layer lens consists of a first gradient-index/geodesic profile in an upper waveguide, partially surrounded by a mirror that reflects the wave into a lower guide where there is a second profile. Here, we derive a new family of rotational-symmetric inhomogeneous index profiles and equival...
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we demonstrate theoretically and experimentally that a specific gradient-index meta-surface can convert a PW to a SW with nearly 100% efficiency. Distinct from conventional devices such as prism23or grating24,25,26couplers, the momentum mismatch between PW and SW is compensated by the reflection-...
Instead of a ball lens, a gradient index lens is frequently used as a fiber coupling device. Such a lens has a gradient profile in which the refractive index varies in the direction perpendicular to the optical axis, as expressed in Eq. (5.23). where N0 is the base index (at the cente...
We calculate the transmittance function for this kind of medium under a paraxial approximation by a quasi-geometrical approach. Likewise, we analyze the pupil effect; that is, we evaluate the intensity distribution diffracted by a gradient-index axicon at the image plane....
Surface waves propagating along the planar interface between an exponentially graded-index medium and the non-Kerr-type nonlinear medium are described anal... S Sergey - 《Optical & Quantum Electronics》 被引量: 0发表: 2023年 Surface waves propagating along the interface between a parabolic graded...
Graded index (GRIN) lenses are commonly used for compact imaging systems. It is not widely appreciated that the ion-exchange process that creates the rotationally symmetric GRIN lens index profile also causes a symmetric birefringence variation. This pro