{"id":26477,"date":"2018-10-18T14:54:24","date_gmt":"2018-10-18T12:54:24","guid":{"rendered":"https:\/\/www.iemn.fr\/?page_id=26477"},"modified":"2018-10-19T10:17:49","modified_gmt":"2018-10-19T08:17:49","slug":"tomas-horak","status":"publish","type":"page","link":"https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/photonique-thz\/members\/tomas-horak","title":{"rendered":"Tom\u00e1\u0161 HOR\u00c1K"},"content":{"rendered":"<blockquote>\n<h4><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/tomas_horak.png\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-26498 alignright\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/tomas_horak.png\" alt=\"\" width=\"176\" height=\"256\" \/><\/a>Tom\u00e1\u0161 HOR\u00c1K<\/h4>\n<p>Laboratoire IEMN \u2013 UMR 8520<br \/>\nAvenue Henry Poincare\u2019<br \/>\n59652 VILLENEUVE D\u2019ASCQ<br \/>\n+33 (0)3 20 19 78 65<br \/>\n<a href=\"mailto:horak.tomas@ed.univ-lille1.fr\">horak.tomas@ed.univ-lille1.fr<\/a><\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<p><strong>\u2013 Thesis title. <\/strong>High-performance non-reciprocal devices for THz and MIR frequencies<\/p>\n<p><strong>\u2013 Thesis starting date. <\/strong>01\/10\/2014<\/p>\n<p><strong>\u2013 Thesis topic<\/strong>. There is currently no solution to protect coherent THz and MIR (such as quantum cascade laser) sources from destabilizing feedback. Such an isolating functionality is essential for an increasing number of applications, where high spectral purity and stable power levels play a central role. We have recently experimentally demonstrated a one-way magnetoplasmonic mirror for NIR frequencies: a properly designed grating on a magneto-optical active substrate reflects perfectly for one incidence direction and absorbs totally for the opposite one. We will perform a fundamental study of nonreciprocal effects using MIR magnetoplasma resonances in small gap semiconductors (InAs, InSb) and ferromagnetic resonances at mm-wave frequencies in hexaferrites. The goal is to prove experimentally that the one-way mirror concept can be exploited to realize a competitive isolator for the MIR and THz range.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u2013 Publications <\/strong><\/p>\n<p>[1] T. Hor\u00e1k, G. Ducournau, M. Mi\u010dica, K. Postava, J. Ben-Youssef, J.-F. Lampin, M. Vanwolleghem. \u201cFree-space Characterization of Magneto-optical Hexaferrites in the Millimeter-Wave Range\u201d. IEEE Trans. Tera. Scien. Techn. (under review<em>)<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u2013 Conference proceedings <\/strong><\/p>\n<p>[2] Horak, T., Vanwolleghem, M., Ducournau, G., Postava, K., Kolejak, P., Lampin, J.-F. \u201cMagneto-optical hexaferrites for terahertz isolating applications\u201d. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 2016-November, art. no. 7758377.<br \/>\n[3] Stepanenko, O., Horak, T., Chochol, J., Postava, K., Lampin, J.-F., Vanwolleghem, M. \u201cCompact mid-IR isolator using nonreciprocal magnetoplasmonic InSb mirror\u201d. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 2016-November, art. no. 7758556.<br \/>\n[4] Mi\u010dica, M., Postava, K., Vanwolleghem, M., Hor\u00e1k, T., Lampin, J.F., Pi\u0161tora, J. \u201cTerahertz material characterization for nonreciprocal integrated optics.\u201d Proceedings of SPIE \u2013 The International Society for Optical Engineering, 9516, art. no. 951615,<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tom\u00e1\u0161 HOR\u00c1K Laboratoire IEMN \u2013 UMR 8520 Avenue Henry Poincare\u2019 59652 VILLENEUVE D\u2019ASCQ +33 (0)3 20 19 78 65 horak.tomas@ed.univ-lille1.fr &nbsp; \u2013 Thesis title. High-performance non-reciprocal devices for THz and MIR frequencies \u2013 Thesis starting date. 01\/10\/2014 \u2013 Thesis topic. There is currently no solution to protect coherent THz and MIR (such as quantum cascade [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":26162,"menu_order":50,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"class_list":["post-26477","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/26477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=26477"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/26477\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/26162"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=26477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}