Abstract
In order to generate ultrafast ultraviolet (uv) pulses via harmonic generation, it is preferable to use gases rather than crystals such as BBO (betabarium borate). This is becaue complications such as finite phase-matching bandwidths and tempora walk-off, which place limits on the uv pulsewidth, can be avoided by using gases. Experiments investigating third-harmonic generation were performed both in air and in pulsed gas jets, since air does not absorb at 266nm.
© 1996 Optical Society of America
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