Measurements of polarization dependencies in parametric down-conversion of x rays into ultraviolet radiation

Parametric down conversion of X-ray photons.

Parametric down conversion of X-ray photons in diamond crystals was detected in two experiments, both using the phase-matching scheme first employed in the X-ray regime by Eisenberger & McCall [Phys. Rev. Lett. (1971), 26, 684-688]. The conversion events were detected by a combination of time-correlation spectroscopy and energy discrimination, using Si drift-chamber detectors. The time-correlat...

SOFT X-RAYS AND EXTREME ULTRAVIOLET RADIATION Principles and Applications

Soft X-rays and Extreme Ultraviolet Radiation: Principles and.

1.1 (a) Confirm that for a photon energy h ω, with corresponding wavelength λ in vacuum, the two are related by eV nm 1239.842 ⋅ = ⋅ λ ω h Values for physical constants are given in Appendix A, page 419. (b) What wavelength in nm corresponds to photons of energy 543.1 eV? (c) What wavelengths in vacuum are associated with the K and L-absorption edges of neon, chlorine, cobalt, and ruthenium? 1....

Hyperentanglement in Parametric Down-Conversion

A theory of spontaneous parametric down-conversion, which gives rise to a quantum state that is simultaneously entangled in three-dimensional wavevector and polarization, allows us to understand the unusual characteristics of fourth-order quantum interference in many experiments, including ultrafast parametric down-conversion, the speci c example illustrated in this paper. The comprehensive app...

Quantum properties of backward parametric down - conversion

Backward parametric down-conversion, in which one of the twin beams is generated in the opposite direction with respect to the pump laser source (Fig.1a), was theoretically predicted fifty years ago, but only recently became experimentally accessible [1], due the challenges involved in the fabrication of the required submicrometer poling period. A peculiarity of this geometry is the presence of...