Continuously driven non-linear systems show interesting behaviour such as bistability and self-oscillations, and have recently come into the focus of theoretical and experimental research again. The system’s nonlinearity fundamentally changes the response to constant driving such that it can even facilitate time-periodic, self-oscillating states. An interesting question regards the interplay...
Introduction
Photoacoustic tomography (PAT) has the potential as a method for measuring the oxygen saturation of the blood in the human brain. Therefore, ultrasensitive detectors are needed to measure ultrasound signals through the human skull. The aim of this work is to investigate and optimise the sensitivity of plano-concave optical sensors. It should be clarified whether the Gaussian...
In recent years, thulium-doped fibre (TDF) laser systems operating around the 1.9-micrometre region, so-called “eye-safe”, have remarkably performed in various applications, such as medical treatments, remote sensing, scientific research, industrial material processing, etc. Most of these applications are achieved by mode-locked TDF lasers working in the anomalous dispersion that limits the...
In this research, SnO2 material was used to make a thin layer of electron carrier for use in optoelectronic devices. Optical properties such as the percentage of transmission and band gap energy and desired morphological properties such as thickness were measured and investigated. On the other hand, the quality of the surface coating and its relationship with the contact angle were...
In recent years, thulium-doped fibre (TDF) laser systems operating around the 1.9-micrometre region, so-called “eye-safe”, have remarkably performed in various applications, such as medical treatments, remote sensing, scientific research, industrial material processing, etc. Most of these applications are achieved by mode-locked TDF lasers working in the anomalous dispersion that limits the...
In this research, SnO2 material was used to make a thin layer of electron carrier for use in optoelectronic devices. Optical properties such as the percentage of transmission and band gap energy and desired morphological properties such as thickness were measured and investigated. On the other hand, the quality of the surface coating and its relationship with the contact angle were...
Continuously driven non-linear systems show interesting behaviour such as bistability and self-oscillations, and have recently come into the focus of theoretical and experimental research again. The system’s nonlinearity fundamentally changes the response to constant driving such that it can even facilitate time-periodic, self-oscillating states. An interesting question regards the interplay...
Introduction
Photoacoustic tomography (PAT) has the potential as a method for measuring the oxygen saturation of the blood in the human brain. Therefore, ultrasensitive detectors are needed to measure ultrasound signals through the human skull. The aim of this work is to investigate and optimise the sensitivity of plano-concave optical sensors. It should be clarified whether the Gaussian...