High-order harmonic generation by nonlinear reflection of an intense high-contrast laser pulse on a plasma.
نویسندگان
چکیده
We demonstrate the use of a plasma mirror to obtain 60-fs 10-TW laser pulses with a temporal contrast of 10(8) on a nanosecond time scale and 10(6) on a picosecond time scale, and we use these high-contrast pulses to generate high harmonics by nonlinear reflection on a plasma with a steep electronic density gradient. Well-collimated harmonics up to 20th order are observed for a laser intensity of approximately equal to 3 x 10(17) W/cm2, whereas no harmonics are obtained without the plasma mirror.
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عنوان ژورنال:
- Optics letters
دوره 29 8 شماره
صفحات -
تاریخ انتشار 2004