We investigate laser high-order harmonic generation in the presence of interfering light. A relatively weak interfering pulse intersects the primary harmonic-generating laser pulse at the focus. The influence on the harmonic-generation process is studied at near-counterpropagating and at perpendicular angles. The interfering beam creates a standing intensity and phase modulation, which disrupts...

...........................................................................................................................................ii Acknowledgements.........................................................................................................................iii Table of

In this paper, a new strategy of switchable CMOS phase-locked loop frequency synthesizer is proposed to increase its tuning range. The switchable PLL which integrates two phase-locked loops with different tuning frequencies are designed and fabricated in 0.5 μm n-well CMOS process. Cadence/Spectre simulations show that the frequency range of the switchable phased-locked loop is between 320 MHz ...

There are a number of high volume applications for DC motors that require precision control of the motor’s speed. Phase locked loop techniques are well suited to provide this control by phase locking the motor to a stable and accurate reference frequency. In this paper, the small signal characteristics, and several large signal effects, of these loops are considered. Models are given for the lo...

A number of approaches to parametric estimation of signal phase are addressed. The goal is to estimate the phase, or more precisely, the parameters of the phase of a signal corrupted by white Gaussian noise. Signal models are restricted to those with linear and quadratic phase, but many of the results presented are applicable to signals with higher order phase laws. Results highlight the classi...

Lowand intermediate mass Higgs bosons decay preferably into fermion pairs. The one-loop electroweak corrections to the respective decay rates are dominated by a flavour-independent term of O(GFmt ). We calculate the two-loop gluon correction to this term. It turns out that this correction screens the leading high-mt behaviour of the one-loop result by roughly 10%. We also present the two-loop Q...

The phase functions of single mineral dust particles levitated in an electrodynamic balance have been measured. Normalized phase functions and the asymmetry parameter could be determined because nearly the full range of scattering angles was available: 0.5° to 177°. The particles have been characterized using microscopy.

The P → ∞ limit was considered in the spherical P-spin glass. It is possible to store information in the vacuum configuration of ferromagnetic phase. Maximal allowed level of noise was calculated in ferromagnetic phase.