Under the same experimental conditions,V-shaped folded cavity is used to compare the intra-cavity frequency-doubled characteristics of Nd:GdYVO4 and Nd:YVO4.With the pumped power of 6.71W,an output power 1.69W and 1.46W of stable frequency-doubled green light was achieved by V-shaped folded cavity,giving an optical conversion efficiency of 25.2% and 21.8%.
It has no kink effect on output performance,an off-state breakdown of up to 13V,and fT=6GHz at DC bias of Vg=Vd=3.6V.At 1.5GHz,a power-added efficiency(PAE)of 50% is achieved with an output power of up to 27dBm from this device.
The HV9931 is a fixed frequency PWM controller designed to drive proprietary single-stage single-switch no-isolated topology,cascading an input power factor correction(PFC)buck-boost stage and an output buck converter power stage.
In the paper, analyzed theoretically the principle of the frequency comb generator’s scheme, the computing of the elements, model of the key parts SRD, and the system’s output and input match circuit, self-reword in time and spectrum domain.
This paper constructs the probability model of Gunther generator at first, and the finite dimension union distribution of the output sequence is presented.
The result shows that the output sequence is an independent and uniformly distributed 0,1 random variable sequence.
It gives the theoretical foundation about why Gunther generator can avoid the statistic weakness of the output sequence of stop-and-go generator, and analyzes the coincidence between output sequence and input sequences of Gunther generator.
Minimum squared error (MSE) algorithm is one of the classical pattern recognition and regression analysis methods, whose objective is to minimize the squared error summation between the output of linear function and the desired output.
Their objective functions include the squared error summation between the output of nonlinear function based on kernels and the desired output and a proper regularization term.
An output control for tracking the command signal from linear parametrically uncertain systems under external disturbances is studied.
Results of the development and study of a 14-stage air high-voltage pulse generator with an output voltage of up to 250 kV, a current rise time of 10 ns, and blow capacitance of 400 pF are presented.
A compact nanosecond electron accelerator with an output energy of up to 4000 keV, a pulsed power of 100-180 MW, a beam current of 0.25-1.1 kA, and a pulse energy of 5-7 J is described.
The device contains a pulse oscillator generating pulses with an amplitude of up to 12 kV, a pulse former reducing the pulse front duration down to 0.1-0.3 ns, and an output device made in the form of a radiator, applicator, or field-forming system.
A high-current nanosecond-pulse generator with a pulse power of up to 1.6 GW, an output voltage of 0.5-1 MV, pulse duration of 40-60 ns, and repetition rates of 300 Hz (in a steady-state mode) and up to 850 Hz (in a burst mode) is described.