{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T11:05:43Z","timestamp":1753873543672,"version":"3.41.2"},"reference-count":8,"publisher":"AIP Publishing","issue":"8","funder":[{"name":"DGAPA-UNAM,PAPIIT","award":["IG100615"],"award-info":[{"award-number":["IG100615"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,8,1]]},"abstract":"<jats:p>In this work, we present an electromagnetic focusing mechanism (EFM), from a commercial webcam, implemented as a delay line of a femtosecond laser pulse characterization system. The characterization system consists on a second order autocorrelator based on a two-photon-absorption detection. The results presented here were performed for two different home-made femtosecond oscillators: Ti:sapph @ 820 nm and highly chirped pulses generated with an Erbium Doped Fiber @ 1550 nm. The EFM applied as a delay line represents an excellent alternative due its performance in terms of stability, resolution, and long scan range up to 3 ps. Due its low power consumption, the device can be connected through the Universal Serial Bus (USB) port. Details of components, schematics of electronic controls, and detection systems are presented.<\/jats:p>","DOI":"10.1063\/1.4929366","type":"journal-article","created":{"date-parts":[[2015,8,25]],"date-time":"2015-08-25T18:21:09Z","timestamp":1440526869000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":2,"title":["Webcam autofocus mechanism used as a delay line for the characterization of femtosecond pulses"],"prefix":"10.1063","volume":"86","author":[{"given":"Pablo","family":"Castro-Mar\u00edn","sequence":"first","affiliation":[{"name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico Centro de Ciencias Aplicadas y Desarrollo Tecnol\u00f3gico, , Circuito Exterior S\/N, Ciudad Universitaria, A. P. 70-186, CP 04510 M\u00e9xico D.F., Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gabriel","family":"Kapellmann-Zafra","sequence":"additional","affiliation":[{"name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico Centro de Ciencias Aplicadas y Desarrollo Tecnol\u00f3gico, , Circuito Exterior S\/N, Ciudad Universitaria, A. P. 70-186, CP 04510 M\u00e9xico D.F., Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jes\u00fas","family":"Gardu\u00f1o-Mej\u00eda","sequence":"additional","affiliation":[{"name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico Centro de Ciencias Aplicadas y Desarrollo Tecnol\u00f3gico, , Circuito Exterior S\/N, Ciudad Universitaria, A. P. 70-186, CP 04510 M\u00e9xico D.F., Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martha","family":"Rosete-Aguilar","sequence":"additional","affiliation":[{"name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico Centro de Ciencias Aplicadas y Desarrollo Tecnol\u00f3gico, , Circuito Exterior S\/N, Ciudad Universitaria, A. P. 70-186, CP 04510 M\u00e9xico D.F., Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos J.","family":"Rom\u00e1n-Moreno","sequence":"additional","affiliation":[{"name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico Centro de Ciencias Aplicadas y Desarrollo Tecnol\u00f3gico, , Circuito Exterior S\/N, Ciudad Universitaria, A. P. 70-186, CP 04510 M\u00e9xico D.F., Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2015,8,25]]},"reference":[{"key":"2023070400304439600_c1","doi-asserted-by":"publisher","first-page":"658","DOI":"10.1364\/OL.17.000658","volume":"17","year":"1992","journal-title":"Opt. Lett."},{"key":"2023070400304439600_c2","doi-asserted-by":"publisher","first-page":"8142","DOI":"10.1364\/AO.37.008142","volume":"37","year":"1998","journal-title":"Appl. Opt."},{"key":"2023070400304439600_c3","doi-asserted-by":"publisher","first-page":"233","DOI":"10.1364\/OL.22.000233","volume":"22","year":"1997","journal-title":"Opt. Lett."},{"key":"2023070400304439600_c4","first-page":"258","volume":"49","year":"2003","journal-title":"Rev. Mex. Fis."},{"key":"2023070400304439600_c5","doi-asserted-by":"publisher","first-page":"358","DOI":"10.1049\/el:19980298","volume":"34","year":"1998","journal-title":"Electron. 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