{"id":538162,"date":"2022-10-21T14:23:02","date_gmt":"2022-10-21T18:23:02","guid":{"rendered":"https:\/\/www.rochester.edu\/newscenter\/?p=538162"},"modified":"2022-10-31T08:47:39","modified_gmt":"2022-10-31T12:47:39","slug":"a-laser-that-could-reshape-the-landscape-of-integrated-photonics-538162","status":"publish","type":"post","link":"https:\/\/www.rochester.edu\/newscenter\/a-laser-that-could-reshape-the-landscape-of-integrated-photonics-538162\/","title":{"rendered":"A laser that could \u2018reshape the landscape of integrated photonics\u2019"},"content":{"rendered":"<h2 style=\"width: 85%; font-weight: bold; line-height: 135%; margin-bottom: 0.5em;\">Rochester researchers see applications in LiDAR, atomic physics, AR\/VR.<\/h2>\n<p>How do you integrate the advantages of a benchtop laser that fills a room onto a semiconductor chip <a href=\"https:\/\/www.asml.com\/en\/technology\/all-about-microchips\/microchip-basics\">the size of a fingernail<\/a>?<\/p>\n<p>A research team co-led by Qiang Lin, a professor of electrical and computer engineering at the <a href=\"https:\/\/rochester.edu\/\">Ä¢¹½´«Ã½<\/a>, has set new milestones in addressing this challenge, with the first multi-color integrated Pockels laser that:<\/p>\n<ul>\n<li>Emits high-coherence light at telecommunication wavelengths<\/li>\n<li>Allows laser-frequency tuning at record speeds<\/li>\n<li>Is the first narrow linewidth laser with fast configurability at the visible band<\/li>\n<\/ul>\n<p>The project, described in <em><a href=\"https:\/\/www.nature.com\/articles\/s41467-022-33101-6\">Nature Communications<\/a><\/em>, was co-led by John Bowers, distinguished professor at University of California\/Santa Barbara, and Kerry Vahala, professor at the California Institute of Technology. Lin Zhu, professor at Clemson University, also collaborated on the project.<\/p>\n<p>The technology \u201chas the potential to reshape the landscape of integrated photonics,\u201d write co-lead authors Mingxiao Li, a former PhD student in Lin\u2019s <a href=\"http:\/\/photonlab.hajim.rochester.edu\/\">Laboratory for Nanophotonics<\/a> at Rochester\u2019s <a href=\"https:\/\/www.hajim.rochester.edu\/index.html\">Hajim School of Engineering &amp; Applied Sciences<\/a>, and Lin Chang, a former postdoctoral student at University of California\/Santa Barbara.<\/p>\n<p>It will pave the way for new applications of integrated semiconductor lasers in LiDAR (Light Detection and Ranging) remote sensing that is used, for example, in self-driving cars. The technology could also lead to advances in microwave photonics, atomic physics, and AR\/VR.<\/p>\n<h3><strong>A \u2018fully on-chip laser solution\u2019<\/strong><\/h3>\n<p>Integrated semiconductor lasers have been at the core of integrated photonics, enabling many advances over the last few decades in information technologies and basic science.<\/p>\n<figure id=\"attachment_538172\" aria-describedby=\"caption-attachment-538172\" style=\"width: 630px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-538172\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/10\/integrated-semiconductor-laser-inline-630x326.jpg\" alt=\"schematic of a new type of integrated semiconductor laser.\" width=\"630\" height=\"326\" srcset=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/10\/integrated-semiconductor-laser-inline-630x326.jpg 630w, https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/10\/integrated-semiconductor-laser-inline-768x397.jpg 768w, https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/10\/integrated-semiconductor-laser-inline.jpg 1000w\" sizes=\"auto, (max-width: 630px) 100vw, 630px\" \/><figcaption id=\"caption-attachment-538172\" class=\"wp-caption-text\">A schematic of a new type of integrated semiconductor laser, developed by a team of researchers led by Qiang Lin, which has the \u201cpotential to reshape the landscape of integrated photonics.\u201d (Drawing by Mingxiao Li)<\/figcaption><\/figure>\n<p>\u201cHowever, despite these impressive achievements, key functions are missing in current integrated lasers,\u201d Li says. \u201cTwo major challenges, the lack of fast reconfigurability and the narrow spectral window, have become major bottlenecks that stall the progression of many evolving applications,\u201d Chang adds.<\/p>\n<p>The researchers say they\u2019ve overcome these challenges by creating a new type of integrated semiconductor laser, based on the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pockels_effect\">Pockels effect<\/a>. The laser is integrated with a lithium-niobate- on-insulator platform.<\/p>\n<p>The new technology includes these beneficial features:<\/p>\n<ul>\n<li>Fast frequency chirping, which will be invaluable in LiDAR sensor systems, which measure distance by recording the time between emission of a short pulse and reception of reflected light.<\/li>\n<li>Frequency conversion capabilities that overcome spectral bandwidth limitations of traditional integrated semiconductor lasers. This will \u201csignificantly relieve\u201d the difficulties in developing new wavelength lasers.<\/li>\n<li>Narrow wavelength and fast reconfigurability, providing a \u201cfully on-chip laser solution\u201d to probe and manipulate atoms and ions in atomic physics, and benefit AR\/VR and other applications at short wavelengths.<\/li>\n<\/ul>\n<p>Other coauthors from Lin\u2019s group include postdoctoral associate Yang He and graduate students Jingwei Lin, Shixin Xue, Jeremy Staffa, Raymond Lopez-Rios, and Usman Javid.<\/p>\n<p>The research was supported by funding from the Defense Advanced Research Projects Agency (DARPA), the Defense Threat Reduction Agency-Joint Science and Technology Office for Chemical and Biological Defense, and the National Science Foundation.<\/p>\n<hr \/>\n<h3><strong>Read more<\/strong><\/h3>\n<div class=\"large-up-3\">\n<div class=\"column\" style=\"padding-left: 0px;\"><a href=\"https:\/\/www.rochester.edu\/newscenter\/rochester-researchers-set-ultrabroadband-record-with-entangled-photons-498662\/\"><img decoding=\"async\" style=\"margin-bottom: 10px;\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2021\/10\/ultrabroadband-nanophotonic-device.jpg\" alt=\"scientific illustration of a solid laser beam entering at one end, and rainbow spectrum waves coming out through the other.\" \/><strong>Rochester researchers set \u2018ultrabroadband\u2019 record with entangled photons<\/strong><\/a><br \/>\n<span style=\"font-size: .9em;\">Engineers have taken advantage of the quantum entanglement phenomenon to generate unprecedented bandwidth and brightness on chip-sized nanophotonic devices.<\/span><\/div>\n<div class=\"column\" style=\"padding-left: 0px;\"><a href=\"https:\/\/www.rochester.edu\/newscenter\/novel-integrated-photonic-chip-sensor-detect-covid-19-514212\/\"><img decoding=\"async\" style=\"margin-bottom: 10px;\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/03\/fea-disposable-integrated-photonic-chip.jpg\" alt=\"illustration of an integrated photonic chip against a colorful background.\" \/><strong> Rochester leads development of novel integrated photonic COVID-19 sensor <\/strong><\/a><br \/>\n<span style=\"font-size: .9em;\">The inexpensive, portable device could help safeguard against future pandemics and detect viruses and infections in underserved populations.<\/span><\/div>\n<div class=\"column\" style=\"padding-left: 0px;\"><a href=\"https:\/\/www.rochester.edu\/newscenter\/photonics-researchers-report-breakthrough-in-miniaturizing-light-based-chips-449382\/\"><img decoding=\"async\" style=\"margin-bottom: 10px;\" src=\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2022\/10\/lab-for-thumbnail.jpg\" alt=\"gloved hands holds a small lithium niobate chip in an etching chamber.\" \/><strong>Researchers report breakthrough in miniaturizing light-based chips<\/strong><\/a><br \/>\n<span style=\"font-size: .9em;\">A Rochester team demonstrates a new way to control light as it moves through integrated circuits, paving a research avenue in communications, computing, and photonics research.<\/span><\/div>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rochester researchers see applications in LiDAR (Light Detection and Ranging), atomic physics, and augmented and virtual reality. <\/p>\n","protected":false},"author":286,"featured_media":538202,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[116],"tags":[19382,29502,18632,7496,23622,18572],"class_list":["post-538162","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sci-tech","tag-department-of-electrical-and-computer-engineering","tag-featured-post-side","tag-hajim-school-of-engineering-and-applied-sciences","tag-photonics","tag-qiang-lin","tag-research-finding"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A laser that could \u2018reshape the landscape of integrated photonics\u2019<\/title>\n<meta name=\"description\" content=\"Rochester researchers see applications for a new type of integrated semiconductor laser in LiDAR, atomic physics, AR\/VR.\" 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