Compared with a sech2-shaped pulse, a Gaussian pulse with the same width at half-maximum has somewhat weaker wings:Figure 1: Temporal shapes of Gaussian and sech2 pulses.The peak power of a Gaussian pulse is ≈ 0.94 times the pulse energy divided by the FWHM pulse duration....
The output spectrum is close to the Gaussian profile with a full-width half-maximum (FWHM) output of 49nm, and the measured autocorrelation trace exhibits the Gaussian profile. The shortest pulse duration of 70 fs was observed after external recompression. The time-band product is 0.44, showing...
Know how to generate a gaussian pulse, compute its Fourier Transform using FFT and power spectral density (PSD) in Matlab & Python.
An estimate of conversion efficient at arbitrary levels of depletion ηest is obtained with the empirical expression: [45]ηest=ηcalc/1+ηcalc Returning to the example 1.064 nm to 532 nm, type-II SHG in KDP and using l=3cm, Uω0=0.3J, and τ=3.6ns for a 6 ns FWHM pulse ...
If I have a pulsed laser with 10 μJ pulse energy and the beam is Gaussian, is that energy the average energy or the peak energy? Would the energy at tip of the distribution (the center of the beam) be equal to 10 μJ or less by a factor? The author's answer: Pulse energy is...
Fig. 5(c) shows that the time interval between pulses is 30.9 ns, consistent with the repetition rate. The autocorrelation trace of the output femtosecond pulse, depicted in Fig. 5(d). presents a full width at half maximum (FWHM) pulse width of 233 fs after fitting the Sech2 profile, ...
PULSELENGTH: The full-width at half-maximum (FWHM) power temporal duration of the pulse. OFFSET: The time at which the source reaches its peak amplitude, measured relative to the start of the simulation. An offset of N seconds corresponds to a source which reaches its peak amplitude N secon...
The pulses were directed through a 1 mm thick window into a vacuum cham- ber where the pulse energy was measured to be 180 μJ. The beam was focussed by a spherical mirror with a focal length of 0.375 m. Astigmatism was minimised by ensuring that the incoming beam was at near...
(blue) with a temporal FWHM that is ~200 ms. The energy consumption of this GHeT-based spiking neuron circuit is ~250 nJ per spike, which can be reduced by orders of magnitude by decreasing the channel width, circuit capacitances (C1 and C2), and gate dielectric thickness of the ...
aNext, we use the well-known transmission function for the uniform Bragg grating to show that this grating is capable ofproviding a degree of dispersion compensation that far exceeds the prediction of. We consider a 40-ps full-width at half maximum (FWHM) Gaussian pulse at 1.55 m wavelength...