| Interferometric autocorrelation in the ultraviolet utilizing spontaneous parametric down-conversion inside an enhancement cavity. | |
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MedLine Citation:
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PMID: 22466202 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Autocorrelation is a common method to estimate the duration of ultrashort laser pulses. In the ultraviolet (UV) regime it is challenging to employ the process of second-harmonic generation, most prominently due to absorption in nonlinear crystals at very short wavelengths. Here we show how to utilize spontaneous parametric down-conversion (SPDC) to generate an autocorrelation signal in the infrared (IR) for UV pulses. Our method utilizes the nth-order emission of the SPDC process, which occurs for low pumping powers proportional to the nth power of the UV intensity. Thus, counting 2n down-converted photons directly yields the nth-order autocorrelation. The method, now with detection of near-IR photons, is applied to the first direct measurement of ultrashort UV pulses circulating inside a UV enhancement cavity. |
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Authors:
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P Michelberger; R Krischek; W Wieczorek; A Ozawa; H Weinfurter |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Optics letters Volume: 37 ISSN: 1539-4794 ISO Abbreviation: Opt Lett Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-04-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708433 Medline TA: Opt Lett Country: United States |
Other Details:
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Languages: eng Pagination: 1223-5 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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