Abstract
Nonlinear-optical processes in the gas phase have long been used for efficient broadband frequency upconversion of high-power laser radiation [1], Extension of these strategies to high-peak-power few-cycle laser pulses is one of the most challenging tasks in the modem era of laser science and technologies. Recent experiments [2, 3] have demonstrated that gas-phase harmonic-generation techniques can produce few-cycle pulses with a pulse width less than 1 fs in the UV/DUV range.
© 2009 IEEE
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