{"title":"Ultrafast Pockels laser","authors":"Lishu Wu","doi":"10.1038/s41567-025-02978-7","DOIUrl":null,"url":null,"abstract":"<p>Microresonators with a high quality factor have enabled the development of frequency-agile, low-noise lasers, desired for applications such as sensing, communication and quantum information processing. However, their performance limits their practical use. Now, Anat Siddharth and colleagues have developed a compact Pockels laser with enhanced output power and frequency tuning range, rate as well as efficiency for practical applications (<i>Nat. Photon</i>. https://doi.org/10.1038/s41566-025-01687-0; 2025).</p><p>The team validated the laser’s practical performance through two key demonstrations. First, they employed the laser in frequency-modulated continuous-wave LiDAR (light detection and ranging) — a remote sensing method that uses light to detect objects by measuring the time for the reflected light to return to the receiver — to achieve below 5 cm distance resolution. Second, they used the laser to measure the absorption line of hydrogen cyanide to test its application in high-resolution atmospheric gas sensing. Siddharth and colleagues found that the measured linewidth of the absorption peak was consistent with the simulated one.</p>","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"13 1","pages":""},"PeriodicalIF":17.6000,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1038/s41567-025-02978-7","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Microresonators with a high quality factor have enabled the development of frequency-agile, low-noise lasers, desired for applications such as sensing, communication and quantum information processing. However, their performance limits their practical use. Now, Anat Siddharth and colleagues have developed a compact Pockels laser with enhanced output power and frequency tuning range, rate as well as efficiency for practical applications (Nat. Photon. https://doi.org/10.1038/s41566-025-01687-0; 2025).
The team validated the laser’s practical performance through two key demonstrations. First, they employed the laser in frequency-modulated continuous-wave LiDAR (light detection and ranging) — a remote sensing method that uses light to detect objects by measuring the time for the reflected light to return to the receiver — to achieve below 5 cm distance resolution. Second, they used the laser to measure the absorption line of hydrogen cyanide to test its application in high-resolution atmospheric gas sensing. Siddharth and colleagues found that the measured linewidth of the absorption peak was consistent with the simulated one.
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