Polarization controlMetasurfaceQuarter-wave plateIn this paper, highly efficient broadband ultrathin quarter-wave plate is proposed to perform circular-to-linear and linear-to-circular polarization conversion u
P.S.如果控制材料与厚度使光通过后两个分量直接相差1/2相位,则称为1/2波片或半波片,该波片有其它用途。 动画地址: Circular Polarization GIF | Gfycat
Along with the insertion loss, the most important figure of merit for a quarter-wave plate is the purity of realized circular polarization. The handedness and purity of the circular polarization is commonly expressed in literature using normalized Ellipticity χ, as defined12 below. χ = 2...
激光器发出的经过偏振片选择后的线偏振光,经过1/4波片后,两个分量产生1/4波长相位差,反射回来后,两个分量的方向和相位差不变,再次经过1/4波片,两个分量再次叠加1/4波长相位差,共1/2相位差,所以合成的光为线偏振光,且偏振方向与原方向垂直,所以无法再次通过偏振片。 总结 1/4波片(wave plate)是利用材料的...
S-Waveplate converts linear polarization to radial or azimuthal polarization and circular polarization to an optical vortex. Main features: converts linear polarization to radial or azimuthal polarization converts circular polarization to an optical vortex high 94% transmission at 1030 nm (no AR coat...
The fabricated quarter waveplate realizes linear to circular polarization conversion in two broad frequency bands comprising 0.64–0.82 THz and 0.96–1.3 THz with an insertion loss ranging from −3.9 to −10 dB. By virtue of ultrathin sub wavelength thickness, the proposed waveplate ...
we study the behavior of monochromatic visible light as it propagates through a birefringent quarter-wave plate based on full-wave simulation. Results reveal a transformation of light from linearly polarization into circular polarization upon emergence from the plate. Vice versa for circularly polarized...
Quarter waveplates or quarter retardation plates, on the other hand, generate retardation of λ/4 between the fast and slow components, quarter waveplates are often used for conversion of linear polarization to circular polarization or vice versa. Besides, Shalom EO also offers octadic waveplates ...
The cross-polarization-conversion efficiency remains above 90% for broad range of frequency by optimizing the geometric parameters of the super- cell. Additionally, the structure behaves as an efficient quarter-wave plate (QWP) capable to transform linear to circular and circular to linear ...
Moreover, compared with the linear polarization of the optical wave, the circular polarization is particularly important for the chiral geometry [14] and chiral imaging [15] of biological structures. The quarter-wave plate (QWP) is a passive device that converts the polarization of electromagnetic...