We present a simple experimental setup that makes possible the measurement of the beam section at focus under full-power conditions. We demonstrate that a 1.5-TW laser system can be focused down to a 13.5-microm-diameter spot using conventional lens focalization, thus achieving laser intensities of up to 10(18) W/cm(2).
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| http://dx.doi.org/10.1364/ol.15.001400 | DOI Listing |
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