Showing papers by "James Taylor published in 1981"
TL;DR: In this paper, the effect of steric hindrance on the lifetimes of polymethines of the cyanine family has been investigated under low power CW picosecond dye laser excitation.
Abstract: Using the synchronously operated streak camera, the fluorescence lifetimes of polymethines of the cyanine family have been examined under low power CW picosecond dye laser excitation. The effects of steric hindrance on the lifetimes and of atomic substitution within the dyes have been measured, with lifetimes ranging from 14 ps to ∼ 2 ns. The strong viscosity-dependent fluorescence lifetime exhibited by these dyes has also been investigated. In addition, deviation from a Single exponential decay was recorded for several of the dyes.
54 citations
TL;DR: In this article, a synchronously pumped mode-locked ring dye laser system with hybrid and composite absorber/gain media arrangements and a simple synchronous cavity was used for subpicosecond pulse generation.
Abstract: Subpicosecond pulse generation has been examined in synchronously pumped mode-locked ring dye laser systems. These include hybrid and composite absorber/gain media arrangements as well as a simple synchronous cavity. The shortest pulses recorded were 0.3 ps for the hybrid system, and this has been shown to be critically dependent on the positioning of the absorber jet in the centre of the cavity to better than 50 μm. Stable operation for subpicosecond pulse generation has been achieved in the ring configuration with greater wavelength tunability and higher average power conversion efficiency than with conventional cavity arrangements.
22 citations
TL;DR: This paper presents an extended covariance analysis utilizing quasi-linearization techniques on the performance of a nonlinear system with random inputs and initial conditions using the monte carlo method to assess its response to a finite number of initial conditions.
12 citations
01 Jan 1981
TL;DR: These methods can be effectively studied using recent advances in describing function theory using high-order, highly nonlinear differential equations.
Abstract: Applying the modern systems approach to studying the “quality of life” often entails developing and using complicated dynamic models (high-order, highly nonlinear differential equations). Dealing with mathematical models of this sort can be difficult. In some instances, however, these models can be effectively studied using recent advances in describing function theory. These methods are described and illustrated in this paper.
5 citations
TL;DR: In this paper, the decay kinetics of the commonly used fluorescence probes, determining their radiative and non-radiative decay rates and examining these decays in various mixed solvent solutions of variable viscosity and polarity.
4 citations