Sökning: "Nonlinear oscillators"
Visar resultat 6 - 10 av 42 avhandlingar innehållade orden Nonlinear oscillators.
6. Nanosecond optical parametric oscillators and amplifiers based on periodically poled KTiOPO4
Sammanfattning : Optical parametric oscillators (OPOs) and optical parametricamplifiers (OPAs) constitute a class of optical frequencyconverting devices that have many possible applications, e.g.in range finding, molecular spectroscopy and medicine. LÄS MER
7. Quasi-Phasematched nonlinear processes in KTiOPO4 isomorphs
Sammanfattning : This thesis explores the use of nonlinear crystals from theKTiOPO4(KTP) family with the aim to extend the possibleapplications for laser sources and to gain more knowledge aboutthe materials benefits and limits. The work focussed onoptical parametric oscillators (OPOs) and optical parametricamplifiers (OPAs), which employ second order nonlinearprocesses. LÄS MER
8. Nonresonant high-frequency actuation of carbon based nanoelectromechanical oscillators
Sammanfattning : Carbon based nanoelectromechanical oscillators outperform their predecessors in many ways. In particular, their extraordinarily high quality factors make them very promising for sensor applications. To operate the nano oscillators, different kinds of actuation mechanisms are utilised, for instance direct or parametric resonance. LÄS MER
9. Nonlinear Modeling of FETs for Microwave Switches and Amplifiers
Sammanfattning : The exponential growth in wireless systems require rapid prototyping of radio frequency circuits (RF) using computer-aided design (CAD) enabled models. Most of the RF circuits (e.g. switches, amplifiers, mixers, etc. LÄS MER
10. Intermodulation in microresonators : for microwave amplification and nanoscale surface analysis
Sammanfattning : This work explores the effects of weak nonlinearity on harmonic oscillators.Two particular systems are studied experimentally: A superconductingresonator formed from a coplanar waveguide that oscillates at microwave frequencies,and the cantilever of an atomic force microscope (AFM) vibratingat ultrasonic frequencies. LÄS MER