wavecircularWe propose a switchable THz metamaterial that can be switched between two functions of half-wave plate and quarter-wave plate.The two switchable functions can be simply achieved by inserting a VO2 film in the metamaterial design.Finite-difference time-domain(FDTD)simulation results show ...
Wavefront Distortion λ/4@632.8nm (for air-spaced type) Retardation Tolerance λ/100 Parallelism <10 arc seconds (for single plate) Surface Quality 40/20 scratch and dig Clear Aperture >90% central area standard Standard ...
Some external factors, such as the variation of wavelength, ambient temperature, and the angle of the incident might all have impacts on the retardation of waveplates and retarders. The most common waveplates are half waveplates and quarter waveplates. A half waveplate, sometimes equivalently ...
The meaning of HALF-WAVE PLATE is a crystal plate that reduces by 1/2 cycle the phase difference between the two components of polarized light traversing it.
摘要: We propose a switchable THz metamaterial that can be switched between two functions of half-wave plate and quarter-wave plate.The two switchable functions can be simply achieved by... 查看全部>>DOI: 10.1088/0256-307X/37/6/064204 年份: 2020 ...
In this paper, we present a design of single layer quasi-crystal metasurface to achieve broadband chiral response (i.e., simultaneous half- and quarter- wave plate operation) for reflected fields. The quasi-crystal design consists of super cell made of variable sized anisotropic metallic patches ...
Optical waveplate Dimension tolerance 0.0mm-0.0 2mm Surface quality 20-10 AR coating R<0.5% at two wavelengths Damage Threshold >10J/cm2, 20ns, 20Hz at 1064nm Wavefront Distortion <1/8 at 632.8nm Retardation Tolerance <1/30 material quartz Packaging and delivery Selling Units: Single item ...
Common Types and Applications The most common types of waveplates are quarter-wave plates (λ/4 plates) and half-wave plates (λ/2 plates), where the difference of phase delays between the two linear polarization directions is π/2 or π, respectively, corresponding to propagation phase shifts...
PROBLEM TO BE SOLVED: To reduce the number of parts and to miniaturize an optical system such as an optical pickup used in a recording and reproducing equipment for a discoid recording medium by integrating a half mirror with a quarter-wave plate comprising a resin film. SOLUTION: At least,...
The plot above shows a comparison between the performance of a WPH10M-633 quartz half-wave plate and a WPH10E-633 liquid crystal polymer half-wave plate with respect to angle of incidence. Wave Plate Selection Guide Achromatic Superachromatic Quartz Zero-OrderHalf-Wave Quartz Zero-OrderQuarter-...