Field dependent avalanche ionization rates in dielectrics.
نویسندگان
چکیده
From the pulse length dependence of the absorption of intense ultrashort laser pulses focused inside fused silica, we reveal the role field-assisted collisional ionization plays in the multiphoton ionization process. This constitutes a cold avalanche ionization mechanism that persists at pulse lengths considered too short for a traditional avalanche.
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ورودعنوان ژورنال:
- Physical review letters
دوره 102 8 شماره
صفحات -
تاریخ انتشار 2009