This work is devoted to a brief exposition of experimental foundations to assume the new type of X-ray propagation through a narrow extended slit. It is experimentally shown that the high intensity of its emergent beam is not connected with the mechanism of free radiation propagation and with multiple total reflection of the beam. This type of X-ray passing we associate with the waveguide-reson...

Nano electromechanical systems (NEMS) represent an important new class of device with wide ranging applications. In this paper we report proposals and calculations for novel methods for excitation and readout of cantilever-style NEMS resonators which are applicable over a wide temperature range. We suggest a Lorentz force-based excitation method and discuss an ultrasensitive readout provided by...

The influence of higher-harmonic free-electron laser (FEL) oscillations on an electron beam have been studied by measuring its bunch length at the NIJI-IV storage ring. The bunch length and the lifetime of the electron beam were measured, and were observed to have become longer owing to harmonic lasing, which is in accord with the increase of the FEL gain. It was demonstrated that the saturated...

The effects of electron beam prebunching on the radiation buildup process in a free electron maser oscillator operating in a collective-Raman regime and oscillating in the frequency range of 4 to 5 GHz are studied. An electron beam is prebunched, accelerated to 70 keV, transported through a drift region, and injected into a linearly polarized wiggler in which FEL interaction takes place. Single...

For generation of photons above 100 keV with a magnetic field strength in the range 0.2-0.5 Tesla, an undulator wavelength λu shorter than 5 mm may be needed with beam in the Advanced Photon Source (APS) storage ring. A microwave beam waveguide undulator system has been investigated for generation of such light. The waveguide structure consists of two parallel reflector surfaces that can be der...

A novel polarization converter using reflective metallic gratings and a polarization beam splitter is introduced for LCD backlight illumination. These two optical elements form a polarization rotation resonator. Broadband and high optical efficiency of polarization conversion in the visible region is achieved through the resonance of the refracted light and the surface plasmon wave in metallic ...

Silicon is becoming the preferable platform for future integrated components, mostly due to the mature and reliable fabrication capabilities of electronics industry. Nevertheless, even the most advanced fabrication technologies suffer from non-uniformity on wafer scale and on chip scale, causing variations in the critical dimensions of fabricated components. This is an important issue since pho...

Graphene has proven to be a promising conductive layer in fabricating optical plasmon resonators on insulator substrate using electron beam lithography and has the potential to construct electrically controlled active plasmon resonators. In this study, we investigate the effect of graphene on plasmon resonance using graphene and Au plasmon resonator system as a model at visible and near-infrare...

Previously, we have proposed a method of diffraction management in optical resonators with left-handed materials. This method is now applied to parametric oscillators. We show that it is possible to engineer the sign and strength of diffraction for either the pump or signal beam – not both. We study the influence of the altered diffraction on the periodic structures and phase solitons emerging ...

large number of applications in physics, chemistry, bilogy, and engineering would greatly benefit from a laser eam that had a sharp focus but, simultaneously, a negliible spreading due to diffraction. Examples of such aplications include laser drilling and writing, trapping nd guiding of microparticles or nanoparticles and neural atoms, precise alignment and metrology echniques, and high-resolu...