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Frequency-modulatio...
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Gustafsson, U
(författare)
Frequency-modulation spectroscopy with blue diode lasers
- Artikel/kapitelEngelska2000
Förlag, utgivningsår, omfång ...
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2000
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electronicrdacarrier
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LIBRIS-ID:oai:lup.lub.lu.se:fd527a43-0091-4ae7-80db-c80ccfe9bbd6
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https://lup.lub.lu.se/record/2258305URI
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https://doi.org/10.1364/AO.39.003774DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
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Frequency-modulation spectroscopy provides ultrasensitive absorption measurements. The technique is especially adaptable to diode lasers, which can be modulated easily, and has been used extensively in the near-infrared and infrared spectral regions. The availability of blue diode lasers now means that the accessible wavelength region can be increased. We successfully demonstrate wavelength-modulation spectroscopy and two-tone frequency-modulation spectroscopy for the weak second resonance line of potassium at 404.8 nm and for the transition at 405.8 nm in lead, starting from the thermally populated 6p(2) P-3(2) metastable level, information on the modulation parameters is obtained with a fitting procedure. Experimental signal-to-noise ratios: at different absorption levels are compared with theoretical signal-to-noise ratios and show good agreement. Detection sensitivities of 2 x 10(-6) and 5 x 10(-6) for wavelength and two-tone frequency-modulation spectroscopy, respectively, for a 120-Hz bandwidth are demonstrated. (C) 2000 Optical Society of America.
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Somesfalean, GabrielLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-gso
(författare)
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Alnis, J
(författare)
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Svanberg, SuneLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-ssv
(författare)
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AtomfysikFysiska institutionen
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Applied Optics39:21, s. 3774-37802155-3165
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