sally used to monitor photodetector, or more commonly photodiode currents. These photodetectors bridge the gap between a physical event, light, and electronics. There are a variety of amplifier configurations to select from and the choice is based on noise, bandwidth, offset, and linearity. The most popular design approach is shown in Figure 1. A considerable amount has been written on the perf...

At the Nederlands Centrum voor Laser Research (NCLR) a 1 kHz diode-pumped Nd:YAG Master Oscillator Power Amplifier (MOPA) chain with a Stimulated Brillouin Scattering (SBS) Phase Conjugate mirror is designed and operated. A small Brewster angle Nd:YAG slab (2 by 2 by 20 mm) is side pumped with 200 ,us diode pulses in a stable oscillator. The oscillator is Q-switched and injection seeded with a ...

This paper presents the design of a capacitive power transfer (CPT) system by using the Class-E amplifier approach. The Class-E amplifier approach is chosen to be adopted since it produces high efficiency as close as to 100%, theoretically. Based on the Class-E approach, a design of wireless power transfer system is used to transfer power to a LED lamp. The system has an output around 4.2 watts...

Two large-area, low noise, high speed fluorescence detectors have been built. One detector consists of a photodiode with an area of 28 mm x 28 mm and a low noise transimpedance amplifier. This detector has a input light-equivalent spectral noise density of less than 3 pW/ √ Hz, can recover from a large scattered light pulse within 10 μs, and has a bandwidth of at least 900 kHz. The second detec...

Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier. Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um technology for operating in the Ka band, i.e. the frequency range of 26.5-40GHz. To design the power amplifier, first a power divider (PD) with a ver...

In the Stanford Free Electron Laser it is necessary t o desynchronize the electron pulses from the accelerator with the light pulses. This effect is a major complication in the data analysis of the FEL. In this presentation, the desynchronism effect is considered for a Laser amplifier. The equations are substantially simpler than the FEL, and most of the results can be obtained analytically. Bo...