0 past simple and past participle of chirp --
1 (especially of a bird) to make a short high sound or sounds --
"Morning!" she chirped.
No electron trapping is to be observed in the case of a negatively chirped pulse.
Very high electron energy may be achieved if the electron is injected with finite kinetic energy between ultra-high intensity chirped lasers.
Therefore, for chirped pulses, the harmonics are odd orders of this spectral component at the leading edge of the pulse.
For the chirped pulses used in this section, t0 /tp 2.3 holds and the envelopes of their vector potentials are clearly asymmetric.
Ultra-broadband chirped-pulse optical parametric amplifier with angularly dispersed beams.
With a combination of self-phase modulation and group-velocity-dispersion effects, the spectrum of the laser pulse is broadened and chirped.
A broadband optical amplifier is then employed to amplify the chirped low-power stretched signal.
The insect chirped, the birds cried, and the monkeys squealed, leaping from branch to branch.
