{"title":"在飞秒光学参量振荡器中通过多级级联产生深紫外","authors":"Yiqun Xue, Xinping Zhang","doi":"10.1007/s00340-024-08359-x","DOIUrl":null,"url":null,"abstract":"<div><p>We report efficient generation of ultrashort laser pulses in the deep ultraviolet (DUV) from a quasi-phase-matched (QPM) optical parametric oscillator (OPO) based on a periodically poled KTP (PPKTP) crystal. Up-conversion through frequency-doubling of the signal pulses (2ω<sub>S</sub>) and sum-frequency generation between the pump and signal pulses (ω<sub>P</sub> + ω<sub>S</sub>) produces femtosecond pulses in the green and in the blue, respectively. A third-order QPM is responsible for the green-pulse generation and a fifth-order QPM for the blue. The cavity mirrors have two high-reflection bands, which support the oscillation of the OPO signal (ω<sub>S</sub>) in the near infrared and the sum-frequency generation of ω<sub>P</sub> + ω<sub>S</sub> in the blue, respectively. The interaction between the blue and green pulses enables further cascading by a sum-frequency generation process, producing the DUV pulses. Cavity-length detuning facilitates the large tuning range of the DUV generation.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-024-08359-x.pdf","citationCount":"0","resultStr":"{\"title\":\"Deep UV generation in a femtosecond optical parametric oscillator through multistage cascading\",\"authors\":\"Yiqun Xue, Xinping Zhang\",\"doi\":\"10.1007/s00340-024-08359-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We report efficient generation of ultrashort laser pulses in the deep ultraviolet (DUV) from a quasi-phase-matched (QPM) optical parametric oscillator (OPO) based on a periodically poled KTP (PPKTP) crystal. Up-conversion through frequency-doubling of the signal pulses (2ω<sub>S</sub>) and sum-frequency generation between the pump and signal pulses (ω<sub>P</sub> + ω<sub>S</sub>) produces femtosecond pulses in the green and in the blue, respectively. A third-order QPM is responsible for the green-pulse generation and a fifth-order QPM for the blue. The cavity mirrors have two high-reflection bands, which support the oscillation of the OPO signal (ω<sub>S</sub>) in the near infrared and the sum-frequency generation of ω<sub>P</sub> + ω<sub>S</sub> in the blue, respectively. The interaction between the blue and green pulses enables further cascading by a sum-frequency generation process, producing the DUV pulses. Cavity-length detuning facilitates the large tuning range of the DUV generation.</p></div>\",\"PeriodicalId\":474,\"journal\":{\"name\":\"Applied Physics B\",\"volume\":\"131 1\",\"pages\":\"\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2024-12-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s00340-024-08359-x.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics B\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00340-024-08359-x\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00340-024-08359-x","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OPTICS","Score":null,"Total":0}
Deep UV generation in a femtosecond optical parametric oscillator through multistage cascading
We report efficient generation of ultrashort laser pulses in the deep ultraviolet (DUV) from a quasi-phase-matched (QPM) optical parametric oscillator (OPO) based on a periodically poled KTP (PPKTP) crystal. Up-conversion through frequency-doubling of the signal pulses (2ωS) and sum-frequency generation between the pump and signal pulses (ωP + ωS) produces femtosecond pulses in the green and in the blue, respectively. A third-order QPM is responsible for the green-pulse generation and a fifth-order QPM for the blue. The cavity mirrors have two high-reflection bands, which support the oscillation of the OPO signal (ωS) in the near infrared and the sum-frequency generation of ωP + ωS in the blue, respectively. The interaction between the blue and green pulses enables further cascading by a sum-frequency generation process, producing the DUV pulses. Cavity-length detuning facilitates the large tuning range of the DUV generation.
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Features publication of experimental and theoretical investigations in applied physics
Offers invited reviews in addition to regular papers
Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more
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Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field.
In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
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