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We demonstrate a high-gain vortex power amplifier with the double-pass configuration based on the rod Nd:YAG crystal. In the experiments, a nanosecond vortex seed beam is converted from a conventional Q-switched Nd:YAG laser output with a spiral phase plate and then amplified with the Nd:YAG amplifier stage. A maximum amplification output energy up to 163.5 mJ is achieved at 20 Hz with a 3.2-ns pulse,...
This paper introduces the structure of the direct current power distribution system and the application of the wireless power distribution switch (WPDS), analyzes the operation mode of the WPDS, designs the wireless power transfer unit with high efficiency and the bi-directional communication unit in order to achieve wireless power switching and load current sensing in each channel at the same time...
In this work, we demonstrated the effects on reflection loss (RL) for a microwave absorbing coating. The mixture of an absorbing coating before curing process including flake carbonyl iron particles (FCIPs), polymer matrix, and moderate diluting agent butanone were distributed uniformly. Microwave absorption properties RL of the coating were measured during curing process at the frequency range of...
The Wireless Power Transfer (WPT) technology is a promising way to break the limit of capability and operation for satellites and make the satellites much lighter, smaller and more flexible and durable. This paper introduces the system integration techniques of WPT between satellites including the energy control subsystem, the laser-WPT subsystem and the microwave-WPT subsystem, and discusses the...
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