{"id":8347,"date":"2024-09-15T22:07:59","date_gmt":"2024-09-15T19:07:59","guid":{"rendered":"https:\/\/quantum-electronics.ru\/en\/?p=8347"},"modified":"2024-09-16T14:32:51","modified_gmt":"2024-09-16T11:32:51","slug":"broadband-sum-frequency-generation-of-a-co-laser-in-antireflection-coated-and-uncoated-zngep2-crystals","status":"publish","type":"post","link":"https:\/\/quantum-electronics.ru\/en\/broadband-sum-frequency-generation-of-a-co-laser-in-antireflection-coated-and-uncoated-zngep2-crystals\/","title":{"rendered":"Broadband sum-frequency generation of a CO laser in antireflection-coated and uncoated ZnGeP2 crystals"},"content":{"rendered":"<p>I. O. Kinyaevsky, Yu. M. Klimachev, M. V. Ionin, A. M. Sagitova, M. M. Zinoviev, N. N. Yudin, S. N. Podzyvalov, A. A. Ionin<\/p>\n<ul>\n<li>Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia<\/li>\n<li>National Research Tomsk State University, 634050, Tomsk, Russia<\/li>\n<li>LLC &#8220;Laboratory of Optical Crystals&#8221;, 634040, Tomsk, Russia<\/li>\n<\/ul>\n<div class=\"around-button\"><b>Abstract:<\/b> We report an experimental study of broadband sum-frequency generation of a nonselective Q-switched CO laser (pulse duration, \u223c0.3 \u03bcs; repetition rate, \u223c90 Hz) in ZnGeP<sub>2<\/sub> crystals with and without an antireflective interference coating. The uncoated crystal surface is found to be optically damaged at a laser radiation intensity of 0.033 GW\/cm<sup>2<\/sup>. Under the same conditions, no damage to the antireflection-coated surface of the crystal is observed. The maximum efficiency of broadband sum-frequency generation of the CO laser in the antireflection-coated sample is 4.8% and turns out to be two times higher than in the uncoated sample. The spectral characteristics of the radiation at sum frequencies do not change in using antireflection-coated and uncoated samples.<\/div>\n<div class=\"around-button\"><b>Keywords:<\/b> ZnGeP<sub>2<\/sub> crystal, second harmonic generation, sum-frequency generation, CO laser.<\/div>\n<div><\/div>\n<div><b>Received:<\/b> 14.08.2023<br \/>\n<b>Revised:<\/b> 25.09.2023<\/div>\n","protected":false},"excerpt":{"rendered":"<p>I. O. Kinyaevsky, Yu. M. Klimachev, M. V. Ionin, A. M. Sagitova, M. M. Zinoviev, N. N. Yudin, S. N. Podzyvalov, A. A. Ionin Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia National Research Tomsk State University, 634050, Tomsk, Russia LLC &#8220;Laboratory of Optical Crystals&#8221;, 634040, Tomsk, Russia Abstract: We report an experimental\u2026 <span class=\"read-more\"><a href=\"https:\/\/quantum-electronics.ru\/en\/broadband-sum-frequency-generation-of-a-co-laser-in-antireflection-coated-and-uncoated-zngep2-crystals\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8347","post","type-post","status-publish","format-standard","hentry","category-stats"],"_links":{"self":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/8347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/comments?post=8347"}],"version-history":[{"count":0,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/8347\/revisions"}],"wp:attachment":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/media?parent=8347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/categories?post=8347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/tags?post=8347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}