What is believed to be a novel phase-sensitive optical heterodyne interferometric ellipsometer is set up to characterize a twisted-nematic liquid crystal (TN-LC) by the elliptical parameters of the output polarization state. This ellipsometer presents the advantages of both polarized optical heterodyne interferometry and optical photometry, which introduce a polarization modulation that is capa...

The loci of polarization states for which either the ellipticity alone or the azimuth alone remains invariant upon passing through an optical system are introduced. The cartesian equations of these two loci are derived in the complex plane in which the polarization states are represented. The equations are quartic and are conveniently expressed in terms of the elements of the Jones. matrix of t...

There has been an increasing demand to understand the optical, electronic, and structure properties of materials at shorter wavelengths in the far ultraviolet (FUV) and extreme ultraviolet (EUV) range. This has pushed researchers to examine and outline new optical devices as quarter wave retarder (QWR) which, coupled with other techniques, can provide valuable information about physical and opt...

We propose and demonstrate a method to realize an easily tunable non-reciprocal wave retarder whose phase retardation depends on the light propagation direction. The system is based combination of reciprocal polarization rotator, magneto-optical two quarter-wave plates. Experimental tests various functionalities in complete agreement with underlying theoretical concept.

According to the self-excitation doubly salient retarder’s braking torque equation and dynamic equation, its braking torque model and the vehicle’s dynamics model can be built using Matlab/Simulink. The simulation results show that the relationship of automobile braking torque, excitation current and retarder speed, and that the variation of vehicle deceleration rate. This method can optimize t...

Artificial dielectrics can be made to exhibit strong birefringence. This property may be used to construct waveplates for a variety of applications. In this article, a method for making a variable artificial dielectric retarder, akin to a Babinet–Soleil compensator, is investigated. Whilst the feature sizes are too small for this device to be practical at optical wavelengths, the technique lend...

In order to optimize the design method and improve the performance of hydraulic retarder, the numerical simulation of multi-field coupling of heat, fluid and solid is carried out to hydraulic retarder, based on the numerical computation and algorithm of heat-fluid coupling and fluid-solid coupling. The computation models of heat-fluid coupling and fluid-solid coupling of hydraulic retarder are ...

Constraint on the optical constants of a film-substrate system for operation as an external-reflection retarder at a given angle of incidence," Appl. Given a transparent film of refractive index n 1 on an absorbing substrate of complex refractive index n 2-jk 2 , we examine the constraint on ni, n2, and k 2 such that the film-substrate system acts as an external-reflection retarder of specified...