{"title":"可粗略扫描的梳状锁定 ECDL，带固定本地振荡器，用于 CRDS CO 线强度测量。","authors":"Yera Kim, Noh Soo Han, Jeong Sik Lim","doi":"10.1364/OE.534492","DOIUrl":null,"url":null,"abstract":"<p><p>This study introduces a simplified method for scanning the optical frequency of an external cavity diode laser (ECDL) locked to an optical frequency comb (OFC) with a repetition rate of 250 MHz. Previous techniques have often been intricate, especially when dealing with a task of comb-mode hopping. In contrast, our method simplifies the mode-hoping method by tuning the piezoelectric transducer (PZT) at a rate of frep/2, while keeping the diode current locked to a fixed-frequency local oscillator (LO) at frep/4. This approach provides a reasonable sampling interval suitable for spectroscopic measurements of gas lines, typically spanning a few gigahertz. Our demonstration effectively improved the noise level of the ringdown traces in cavity ringdown spectroscopy (CRDS), even when using a passively stabilized optical cavity. Additionally, we report the line strength of the <sup>12</sup>C<sup>16</sup>O R23 line, yielding results that closely align with previous research studies.</p>","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"32 23","pages":"40315-40325"},"PeriodicalIF":3.2000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Coarsely scannable comb-locked ECDL with fixed local oscillator for CRDS measurement of CO line strength.\",\"authors\":\"Yera Kim, Noh Soo Han, Jeong Sik Lim\",\"doi\":\"10.1364/OE.534492\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>This study introduces a simplified method for scanning the optical frequency of an external cavity diode laser (ECDL) locked to an optical frequency comb (OFC) with a repetition rate of 250 MHz. Previous techniques have often been intricate, especially when dealing with a task of comb-mode hopping. In contrast, our method simplifies the mode-hoping method by tuning the piezoelectric transducer (PZT) at a rate of frep/2, while keeping the diode current locked to a fixed-frequency local oscillator (LO) at frep/4. This approach provides a reasonable sampling interval suitable for spectroscopic measurements of gas lines, typically spanning a few gigahertz. Our demonstration effectively improved the noise level of the ringdown traces in cavity ringdown spectroscopy (CRDS), even when using a passively stabilized optical cavity. Additionally, we report the line strength of the <sup>12</sup>C<sup>16</sup>O R23 line, yielding results that closely align with previous research studies.</p>\",\"PeriodicalId\":19691,\"journal\":{\"name\":\"Optics express\",\"volume\":\"32 23\",\"pages\":\"40315-40325\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-11-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics express\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1364/OE.534492\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics express","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OE.534492","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Coarsely scannable comb-locked ECDL with fixed local oscillator for CRDS measurement of CO line strength.
This study introduces a simplified method for scanning the optical frequency of an external cavity diode laser (ECDL) locked to an optical frequency comb (OFC) with a repetition rate of 250 MHz. Previous techniques have often been intricate, especially when dealing with a task of comb-mode hopping. In contrast, our method simplifies the mode-hoping method by tuning the piezoelectric transducer (PZT) at a rate of frep/2, while keeping the diode current locked to a fixed-frequency local oscillator (LO) at frep/4. This approach provides a reasonable sampling interval suitable for spectroscopic measurements of gas lines, typically spanning a few gigahertz. Our demonstration effectively improved the noise level of the ringdown traces in cavity ringdown spectroscopy (CRDS), even when using a passively stabilized optical cavity. Additionally, we report the line strength of the 12C16O R23 line, yielding results that closely align with previous research studies.
期刊介绍：
Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
