{"id":150,"date":"2018-12-04T19:41:19","date_gmt":"2018-12-04T19:41:19","guid":{"rendered":"http:\/\/creolcms.smca.ucf.edu\/qcl\/?p=150"},"modified":"2018-12-04T19:41:19","modified_gmt":"2018-12-04T19:41:19","slug":"room-temperature-operation-of-quantum-cascade-lasers-monolithically-integrated-onto-a-lattice-mismatched-substrate","status":"publish","type":"post","link":"https:\/\/www.creol.ucf.edu\/qcl\/room-temperature-operation-of-quantum-cascade-lasers-monolithically-integrated-onto-a-lattice-mismatched-substrate\/","title":{"rendered":"Room temperature operation of quantum cascade lasers monolithically integrated onto a lattice-mismatched substrate"},"content":{"rendered":"<p>Experimental data for an InP-based 40-stage quantum cascade laser structure grown on a 6-in. GaAs substrate with a metamorphic buffer are reported. The laser structure had an Al0.78In0.22As\/In0.73Ga0.27As strain-balanced active region composition and an 8 \u03bcm-thick, all-InP waveguide. High reflection coated 3 mm \u00d7 30 \u03bcm devices processed from the wafer into a ridge-waveguide configuration with a lateral current injection scheme delivered over 200 mW of total peak power at 78 K with lasing observed up to 170 K. No signs of performance degradation were observed during a preliminary 200-min reliability testing. Temperature dependence for threshold current and slope efficiency in the range from 78 K to 230 K can be described with characteristic temperatures of T0 \u2248 460 K and T1 \u2248 210 K, respectively. Lasing was extended to 303 K by applying a partial high reflection coating to the front facet of the laser.<\/p>\n","protected":false},"excerpt":{"rendered":"Experimental data for an InP-based 40-stage quantum cascade laser structure grown on a 6-in. GaAs substrate with a metamorphic buffer are reported. The laser structure had an Al0.78In0.22As\/In0.73Ga0.27As strain-balanced active region composition and an 8 \u03bcm-thick, all-InP waveguide. High reflection coated 3 mm \u00d7 30 \u03bcm devices processed from the wafer into a ridge-waveguide configuration [&hellip;]","protected":false},"author":26,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-150","post","type-post","status-publish","format-standard","hentry","category-publications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/posts\/150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/comments?post=150"}],"version-history":[{"count":1,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/posts\/150\/revisions"}],"predecessor-version":[{"id":151,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/posts\/150\/revisions\/151"}],"wp:attachment":[{"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/media?parent=150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/categories?post=150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.creol.ucf.edu\/qcl\/wp-json\/wp\/v2\/tags?post=150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}