Evidence of nuclear motion in H2-like molecules by means of high harmonic generation

Abstract

The dynamics of hydrogen-like molecules is investigated beyond the usual fixed nuclei approximation. The nuclear motion introduces in the familiar spectrum of emitted radiation additional regular lines whose separation is essentially given by the vibrational frequency of nuclear motion. A wavelet analysis of the emitted spectrum shows that the intensity of the harmonic lines is modulated with the same period of the nuclear motion; this suggests the possibility of the real-time control of the nuclear dynamics.

Constraints on the spatial variation of Planck constant

“…The effect is known with the name high order harmonic generation (HHG) [57][58][59]. The radiation carries information on the behaviour of the charge and can be used as a tool for spectroscopy and control of the atoms [60][61][62][63]. It is normal, therefore, to see if the emitted radiation can be used to set a constraint on γ .…”

Application of RPCA in optical coherence tomography for speckle noise reduction

“…In some research, an averaging technique is employed for speckle noise suppression [20][21][22][23], however it results in a one-dimensional curve that impedes further performance, such as image segmentation and pattern recognition. Wavelet transforms have also been applied in the OCT images for speckle noise reduction and obscured pattern recognition [35,36] as well as other applications in the fields of laser physics [24][25][26][27][28][29][30][31][32][33][34]. For example, [36] indicates wavelet analysis can enhance the OCT imaging capabilities and reduce the statistical noise associated with multiple scattering.…”