We have demonstrated high-peak-power generation at 1 kW average power by applying an acousto-optic Q switch to a quasi-cw diode-pumped Nd:YAG master oscillator power amplifier. We achieved a maximum peak power of 2.3 MW by driving the Q switch in burst mode. The average repetition rate was 6 kHz. The corresponding beam quality was M2 = 9.

A comparison study was conducted to characterize the loss mechanisms, component stresses, and overall efficiencies of a group of voltage-mode softswitching PWM methods including two newly developed methods. All soft-switching methods in the selected group allow zero voltage turn-on and turn-off of the main switch and utilize a single auxiliary switch with some resonant components. Advantages an...

Consader a consumer who can choose to travel on a congestlble fast mode or on a congesuble slow mode. Users who most value tame will use the fast mode A toll on the slow mode can reduce some people who lmtlally use that mode to switch to the fast mode A toll on the slow mode w~th revenue not returned to users then necessarily reduces the welfare of all users A toil on the fast mode may raxse ag...

Traditional optical networks are gradually evolving towards intelligent optical networks due to the need for faster bandwidth provisioning, protection and restoration of the network that can be accomplished with devices like optical switch, add drop multiplexer and cross connects. Since dense wavelength multiplexing forms the physical layer for intelligent optical networking, the roll of high s...

Power reduction is one of the biggest challenges in CMOS integrated circuit design. Optimization of power is inevitable in order to reduce package cost and extended battery life. As a switch tri-modal MTCMOS (Multi Threshold CMOS switch) can be considered as a low power solution for data retentive power gating applications. In MTCMOS, transistors with multiple threshold voltages are used in ord...

We propose a new scheme based on quantum dot-bimodal cavity coupling system to realize all-optical switch and logic gates in low-photon-number regime. Suppression of mode transmission due to the destructive interference effect is theoretically demonstrated by driving the cavity with two orthogonally polarized pulsed lasers at certain pulse delay. The transmitted mode can be selected by designin...

In this paper, we propose an N × N high speed and non-blocking asynchronous transfer mode (ATM) switch with input and output buffers. In this switch, each buffer adopts a priority discarding scheme, which discards incoming cells of low-priority traffic when its queue length is greater than a predefined threshold value. Our switch also supports broadcast/multicast functions without increasing th...

It has been proposed to make practical use of chaos in communication [1], in enhancing mixing in chemical processes [2] and in spreading the spectrum of switch-mode power suppies to avoid electromagnetic interference [3, 4]. In such applications it will be necessary to obtain reliable operation in the chaotic mode. It is known that for most smooth chaotic systems (take the logistic map [5] for ...