期刊
OPTICS EXPRESS
卷 16, 期 25, 页码 20742-20747出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.16.020742
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资金
- Korea Science and Engineering Foundation (KOSEF)
- Korea government (MEST) [R11-2007-012-01001-0, R01-2007-00020651- 0]
- National Research Foundation of Korea [R11-2007-012-01001-0, R01-2007-000-20651-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report a time-resolved fluorescence apparatus utilizing fluorescence upconversion by noncollinear sum frequency generation and two photon absorption as an excitation. Near perfect time-resolution is achieved with 20 fs pulses to give the instrument response of 33 fs (FWHM) over the entire fluorescence wavelength for a 100 mu m thick mixing crystal. Through experiments and numerical simulations, it is shown that 40 fs time-resolution can be obtained even for a 580 mu m thick mixing crystal at a fluorescence wavelength longer than 500 nm. (C) 2008 Optical Society of America
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