{"id":246821,"date":"2026-11-07T10:15:08","date_gmt":"2026-11-07T16:15:08","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/11\/submicrometer-focusing-of-isolated-attosecond-xuv-pulses-approaching-1016-w-cm2"},"modified":"2026-11-07T10:15:08","modified_gmt":"2026-11-07T16:15:08","slug":"submicrometer-focusing-of-isolated-attosecond-xuv-pulses-approaching-1016-w-cm2","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/11\/submicrometer-focusing-of-isolated-attosecond-xuv-pulses-approaching-1016-w-cm2","title":{"rendered":"Submicrometer Focusing of Isolated Attosecond XUV Pulses Approaching 1016 W\/cm2"},"content":{"rendered":"\n<p>We demonstrate submicrometer focusing of isolated attosecond pulses in the extreme ultraviolet region using a custom ellipsoidal mirror. The obtained focal spot sizes were verified using knife-edge measurements with a sharp silicon edge, confirming reproducible dimensions down to 0.46 \u03bcm \u00d7 0.36 \u03bcm (full width at half maximum), demonstrating near-diffraction-limited focusing performance. Focusing a 1.1-GW tabletop isolated attosecond pulse source yields a peak intensity of 3 \u00d7 10<sup>15<\/sup> W\/cm<sup>2<\/sup>, and a realistic pathway toward 10<sup>16<\/sup> W\/cm<sup>2<\/sup> is obtained by optimizing the beamline throughput. These results establish a practical route toward attosecond nonlinear optics in both gas and solid phases, driven by intense extreme ultraviolet fields.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We demonstrate submicrometer focusing of isolated attosecond pulses in the extreme ultraviolet region using a custom ellipsoidal mirror. The obtained focal spot sizes were verified using knife-edge measurements with a sharp silicon edge, confirming reproducible dimensions down to 0.46 \u03bcm \u00d7 0.36 \u03bcm (full width at half maximum), demonstrating near-diffraction-limited focusing performance. Focusing a 1.1-GW [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-246821","post","type-post","status-publish","format-standard","hentry","category-futurism"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/246821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=246821"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/246821\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=246821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=246821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=246821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}