Circularly polarized X-rays produced by a diamond X-ray phase retarder of thickness 0.5 mm in the Laue transmission configuration have been used for recording X-ray magnetic circular dichroism (XMCD) on the bending-magnet beamline BM25A (SpLine) at the ESRF. Field reversal and helicity reversal techniques have been used to carry out the measurements. The performance of the experimental set-up h...

We demonstrate that a pair of perpendicular electrical dipolar scatterers resonating at different frequencies can be used as a metamaterial unit cell to construct a nanometer-thin retarder in reflection, designing nanocross and nanobrick plasmonic configurations to function as reflecting quarter-wave plates at ~1520 and 770 nm, respectively. The design is corroborated experimentally with a mono...

Design of a two-reflection, non-deviating beam total internal reflection quarterwave phase retarder is presented. The device treats the two main drawbacks of the Fresnel rhomb which are the lateral shift of the emergent beam and sensitivity of the retardance value to errors in the external angle of incidence. In addition, it is of compact size and the path length of the beam inside the device i...

which evidently has the required property. In [1], a similar example is given for]F109* It is implicit in [1], [12], that such sequences exist in 3Fp if ~Fp contains a so-called Fibonacci Primitive Root, or FPR: see below for definitions. Here we show (Theorem 4.2) that such sequences exist in Wp if and only if Wp contains an FPR; moreover, when Wp does contain an FPR, we show that the only suc...

Abstract Atomic thickness thin films are critical functional materials and structures in atomic close-to-atomic scale manufacturing. However, fast, facile, highly sensitive precision measurement of film remains challenging. The reflected light has a dramatic phase change extreme reflectivity considering the Brewster angle, indicating high sensitivity optical signal to near this angle. Hence, po...

Trucks have the problems of frequent braking and long-term during long-slope transportation. As temperature traditional eddy current retarder is as high 500 °C braking, torque seriously degraded. According to principle thermal effect, this paper proposes an in which both stator excitation coil are water-cooled. The multi-field coupling bidirectional data transmission model field, field transien...

An alkali-activated blend of aluminum cement and class F fly ash is an attractive solution for geothermal wells where cement is exposed to significant thermal shocks and aggressive environments. Set-control additives enable the safe cement placement in a well but may compromise its mechanical properties. This work evaluates the effect of a tartaric-acid set retarder on phase composition, micros...

A tunable polarization retarder based on a bulk buried heterostructure semiconductor waveguide has been demonstrated for the specific application of quantum key distribution. Simplicity of construction, low drive voltage, wide spectral range of operation and potentially high frequency response make it ideal for polarization modulation at the transmitter (Alice) and receiver (Bob) in at least tw...