Showing papers by "University of Twente published in 1972"
TL;DR: In this paper, a 10-W CW CO 2 laser oscillating on a single transition at 9.2-μ wavelength was used to explore the possibilities for nonlinear optics in proustite in a wavelength region previously indicated as having low absorption.
Abstract: The possibilities for nonlinear optics in proustite have been explored in a wavelength region previously indicated as having low absorption. We used a 10-W CW CO 2 laser oscillating on a single transition at 9.2-μ wavelength. The observed values for nonlinearity and absorption are, respectivley, (7.9 \pm 2.0) \times 10^{-23} in MKS units and 0.29 cm-1.
12 citations
TL;DR: It is deduced that, in general, the introduction of aperiodic stimulation tends to make the functional relationship between the variance andN behave as though it holds for noise with a very broad frequency spectrum; the variance is proportional to 1/N.
Abstract: A mathematical analysis of the variance of the average evoked-response computation as a function of the numberN of stimuli presented is made for the case when the response is disturbed by additive stationary noise. A comparison is made between the variance for purely periodic stimuli and that for stimuli of which the interstimulus durations are Gaussian distributed. In the latter situation, the interval durations may be correlated with each other, e.g. according to a Gaussian Markov process. It is deduced that, in general, the introduction of aperiodic stimulation tends to make the functional relationship between the variance andN behave as though it holds for noise with a very broad frequency spectrum; the variance is proportional to 1/N.
5 citations