2.4. 2.5. 2.6. Pulse shaping by linear filtering Picosecond pulse shaping Fourier synthesis of femtosecond optical waveforms 2.3.1. Fixed masks fabricated using microlithography 2.3.2. Spatial light modulators (SLMs) for programmable pulse shaping 2.3.2.1. Pulse shaping using liquid crystal modulator arrays 2.3.2.2. Pulse shaping using acousto-optic deflectors 2.3.3. Movable and deformable mirr...

This letter presents a low power CMOS pulse generator based on spectral efficiently gated oscillator for multiband impulse radio ultra-wideband (UWB) system. The pulse generator is based on an on/off switched LC oscillator with the trapezoid switching pulse. By using trapezoid pulse for on/off switching signal of the oscillator, better output spectral characteristic can be achieved without addi...

In this article, enhancement of THz radiation was studied using pulse shaping thchnique. Over 40% enhance was demonstrated by positive chirped optical pulses. This could be attributed to the pump-dump process in excitation.

The direct space-to-time (DST) pulse shaping apparatus is investigated both theoretically and experimentally. The discussion shows how the operation of the DST pulse shaper may be understood in terms of the femtosecond response of a generalized spectrometer. A complete discussion of the advantages and tradeoffs of utilizing this pulse-shaping configuration is given, including the direct scaling...

Antennas are a critical component of UWB link because of radical changes in signal waveform/spectrum on its way between transmitter and receiver. Antenna, circuitry and signals need to be designed collectively to send efficiently signals of pulsed energy between transmit and receiver antennas. Such a co-design approach is demonstrated in this work through pulse shaping for achieving required te...

The linear pulse-shaping amplifier can also be used in simple pulse-counting applications, as depicted in Fig. 1(b). Amplifier output pulse widths range from 3 to 70 μs, depending on the selected shaping time constant. This width sets the dead time for counting events when utilizing an SCA, counter, and timer. To maintain dead time losses <10%, the counting rate is typically limited to <33,000 ...

A brief analysis is presented of the effect of small variations in amplitude and phase in the accelerating rf pulse in addition to the deliberate pulse shaping on the energy deviation along a bunch train and the effects of pulse-to-pulse fluctuations.

We experimentally demonstrate simultaneous pulse repetition-rate multiplication and periodic pulse-to-pulse peak-intensity control based on optimized periodic spectral line-by-line pulse shaping. Accordingly, the method allows us to generate multiplied pulse trains in which the amplitude of each single pulse in a period can be arbitrarily tailored. The technique is illustrated with the generati...