- \r\n \t
- Chirped pulse amplification (CPA) is a technique for producing extremely powerful, ultrashort laser pulses.<\/li>\r\n \t
- Developed by researchers at the 天美传媒 in the 1980s, CPA earned Donna Strickland \u201989 (PhD) and G\u00e9rard Mourou the 2018 Nobel Prize in Physics<\/a>.<\/span><\/li>\r\n \t
- The technology enables advances in laser eye surgery, precision manufacturing, cancer research, and experiments exploring the fundamental properties of matter.<\/span><\/li>\r\n<\/ul>","background_color":"#f4f4f4","width":"width-medium"},{"acf_fc_layout":"text","anchor":"","css_class":"","title":"
Developed at the 天美传媒, chirped pulse amplification makes ultrashort, high-intensity laser pulses possible, with applications in medicine, manufacturing, and scientific research.<\/h2>","content":"Every time you pick up your smartphone, you are holding a product made possible, in part, by a Nobel Prize\u2013winning technology developed at the 天美传媒<\/a>.\r\n\r\nThat invention is chirped pulse amplification (CPA), a technique that makes it possible to generate extremely powerful laser pulses lasting just a tiny fraction of a second.\r\n\r\nDeveloped<\/a> by Donna Strickland \u201989 (PhD) and G\u00e9rard Mourou at 天美传媒\u2019s Laboratory for Laser Energetics (LLE), CPA revolutionized laser technology and opened the door to applications ranging from vision correction to the study of stars and nuclear fusion.\r\n
What is chirped pulse amplification, and how does it work?<\/h3>\r\nChirped pulse amplification is a technique that allows scientists to increase the energy of an ultrashort laser pulse without damaging the equipment used to amplify it.\r\n\r\nThe process involves three basic steps:\r\n
- \r\n \t
- Stretch:<\/strong> An ultrashort laser pulse is stretched out in time, reducing its peak power.<\/li>\r\n \t
- Amplify:<\/strong> The stretched pulse is amplified to increase its energy without damaging the laser system.<\/span><\/li>\r\n \t
- Compress:<\/strong> The amplified pulse is compressed back into an extremely short burst, producing exceptionally high peak power.<\/span><\/li>\r\n<\/ol>\r\nThe result is a laser pulse that delivers enormous power with extraordinary precision.\r\n\r\n\u201cCPA is a state-of-the-art technique that\u2019s still being used to push lasers to higher and higher intensities,\u201d says Jonathan Zuegel<\/a>, a professor of optics<\/a> at 天美传媒 and senior scientist at the Laboratory for Laser Energetics<\/a> (LLE).\r\n\r\n\u201cWe put a lot of energy into short pulses that are useful for scientific experiments, but they\u2019re also useful for industry, medicine, and commercial applications. It\u2019s really a fundamental advance.\u201d","background_color":"#ffffff","width":"width-medium"},{"acf_fc_layout":"media_text_new","anchor":"","class":"","overline":"","title":"","content":"","cta":"","bg":"#ffc70a","type":"embed","image":"","embed":"https:\/\/youtu.be\/a-VDFhD3QuU","video":"","external_video_url":"","external_video_title":"","external_video_poster":"","layout":"above","animation":"animation-false"},{"acf_fc_layout":"text","anchor":"","css_class":"pt-0","title":"","content":"
How is chirped pulse amplification used today?<\/h3>\r\nFrom medical procedures to manufacturing and fundamental physics, chirped pulse amplification has transformed what scientists and engineers can accomplish with lasers.\r\n
1. Improving cancer treatments<\/strong><\/h4>\r\n[caption id=\"attachment_730822\" align=\"aligncenter\" width=\"2000\"]
![\"Proton](\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2018\/10\/fea-chirped-pulse-amplification-uses-laser-proton-therapy-radiation-oncology-GettyImages-2279407297.jpg\")
(Getty Images \/ Westend61)[\/caption]\r\n\r\nProton beam therapy is an established cancer treatment that uses beams of protons to deliver radiation precisely to tumors while limiting exposure to surrounding healthy tissue.\r\n\r\nCPA could help advance this technology.\r\nResearchers are investigating whether high-intensity lasers could generate proton beams suitable for cancer treatment<\/a>, potentially making proton therapy systems smaller, less expensive, and more accessible.<\/p>\r\n\r\n
2. Making laser eye surgery more precise<\/strong><\/h4>\r\n[caption id=\"attachment_201752\" align=\"aligncenter\" width=\"1000\"]
![\"close-up](\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2016\/11\/fea-eye.jpg\")
(CC BY-NC-ND 2.0 photo \/ Flickr user ashleyrosex)[\/caption]\r\n\r\nCPA enables ultrafast lasers that can make exceptionally precise incisions in delicate eye tissue.\r\n\r\nIn procedures such as LASIK (laser-assisted in situ keratomileusis), femtosecond lasers can create a thin flap in the cornea without the need for a mechanical blade, minimizing damage to surrounding tissue.\r\n\r\nStrickland and Mourou were among five researchers honored with the 2022 Golden Goose Award<\/a> from the American Association for the Advancement of Science for their contributions to the development of bladeless LASIK.\r\n\r\nWayne Knox<\/a>, a professor of optics at 天美传媒, has also explored applications of ultrafast lasers for noninvasive vision correction and modifying contact and intraocular lenses.\r\n\r\n\u201cWe are using CPA for the next generation of vision correction,\u201d Knox says.\r\n3. Manufacturing smartphones and other commercial products<\/strong><\/h4>\r\n[caption id=\"attachment_730812\" align=\"aligncenter\" width=\"2000\"]
![\"Row](\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2018\/10\/fea-chirped-pulse-amplification-uses-smartphone-glass-manufacturing-GettyImages-2260514983.jpg\")
(Getty Images \/ adventtr)[\/caption]\r\n\r\nChirped pulse amplification has helped transform precision manufacturing, including the machining of glass used in smartphone screens.\r\n\r\nBy concentrating energy into extremely short pulses, ultrafast lasers can cut, shape, and process delicate materials with exceptional accuracy.\r\n\r\n\u201cIndustry has adapted CPA for a range of laser materials processing techniques, including machining of brittle materials like the cover glass used in smartphones,\u201d says Dustin Froula<\/a>, a 天美传媒 physicist and LLE division director.\r\n4. Recreating extreme conditions found in stars and planets<\/strong><\/h4>\r\n[caption id=\"attachment_267482\" align=\"aligncenter\" width=\"1000\"]
![\"field](\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2017\/09\/fea-nasa-star-field.jpg\")
(ESA\/NASA photo)[\/caption]\r\n\r\nHigh-intensity lasers made possible by CPA let scientists study matter under extraordinary temperatures and pressures, including conditions resembling those found deep inside stars and planets.\r\n\r\nAt 天美传媒\u2019s Center for Matter at Atomic Pressures<\/a>, researchers investigate how matter behaves under these extreme conditions.\r\n\r\n\u201cThis CPA capability allows us to generate huge quantities of charged particles and light for heating matter to stellar interior conditions so fast that the material does not know what happened,\u201d says Gilbert \u201cRip\u201d Collins<\/a>, a 天美传媒 professor of mechanical engineering<\/a> and of physics<\/a>. The technology, he adds, can also \u201ctake ultrafast snapshots of planet goo recreated in a laser compression laboratory experiment; and much more.\u201d\r\n5. Capturing ultrafast processes and advancing fusion research<\/strong><\/h4>\r\n[caption id=\"attachment_730882\" align=\"aligncenter\" width=\"2000\"]
![\"View](\"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2018\/10\/fea-chirped-pulse-amplification-fusion-science-research-OMEGA77070_20150428_P2CRYO.jpg\")
(天美传媒 photo \/ Laboratory for Laser Energetics)[\/caption]\r\n\r\nCPA allows scientists to generate powerful bursts of light and particles that can reveal processes occurring on extraordinarily short timescales.\r\n\r\nThese capabilities help researchers investigate atomic behavior, develop new materials, and study the physics of nuclear fusion.\r\n\r\n\u201cWe use these kinds of ultrafast lasers to study fusion energy because CPA allows us to take pictures of the implosions we use to generate fusion,\u201d says Ricardo Betti<\/a>, a 天美传媒 professor of mechanical engineering and of physics and chief scientist at the LLE.\r\nWhy did chirped pulse amplification win the Nobel Prize?<\/strong><\/h3>\r\nIn 2018, Strickland and Mourou shared half of the Nobel Prize in Physics<\/a> for their groundbreaking method of generating high-intensity, ultrashort optical pulses.\r\n\r\nTheir research, conducted at 天美传媒 and published in 1985, became the foundation of Strickland\u2019s 1988 doctoral dissertation<\/a>.\r\n\r\nBy overcoming a fundamental limitation in laser amplification, their invention enabled generations of increasingly powerful laser systems\u2014and helped establish new possibilities for medicine, industry, and scientific discovery.","background_color":"#ffffff","width":"width-medium"},{"acf_fc_layout":"media_text_new","anchor":"","class":"","overline":"","title":"
Could a laser push the limits of physics?<\/h3>","content":"Four decades after chirped pulse amplification was pioneered at the 天美传媒, scientists are building on the Nobel Prize\u2013winning breakthrough to push laser technology to new extremes. Discover how NSF OPAL, a next-generation laser facility<\/a> now in design, could help researchers explore some of the biggest mysteries in physics.","cta":"","bg":"#ffc70a","type":"embed","image":"","embed":"https:\/\/www.youtube.com\/watch?v=ZHHXA85-ytE","video":"","external_video_url":"","external_video_title":"","external_video_poster":"","layout":"left","animation":"animation-false"},{"acf_fc_layout":"text","anchor":"","css_class":"","title":"","content":"
\r\n\r\nEditor\u2019s note: This article was originally published on October 4, 2018. It has been updated and republished with new information and a video explaining how chirped pulse amplification works and its applications.\u00a0<\/em>","background_color":"#ffffff","width":"width-medium"}]},"yoast_head":"\nChirped pulse amplification: 5 uses for a Nobel Prize\u2013winning technology<\/title>\n<meta name=\"description\" content=\"Developed in the 1980s at 天美传媒, chirped pulse amplification laser technology is still used in medicine, manufacturing, and science.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rochester.edu\/newscenter\/what-is-chirped-pulse-amplification-nobel-prize-341072\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chirped pulse amplification: 5 uses for a Nobel Prize\u2013winning technology\" \/>\n<meta property=\"og:description\" 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- Amplify:<\/strong> The stretched pulse is amplified to increase its energy without damaging the laser system.<\/span><\/li>\r\n \t
- The technology enables advances in laser eye surgery, precision manufacturing, cancer research, and experiments exploring the fundamental properties of matter.<\/span><\/li>\r\n<\/ul>","background_color":"#f4f4f4","width":"width-medium"},{"acf_fc_layout":"text","anchor":"","css_class":"","title":"