Experimental study on methods minimizing the influence of velocity-changing collisions in Doppler-free saturation spectroscopy
Identifieur interne : 000754 ( Main/Exploration ); précédent : 000753; suivant : 000755Experimental study on methods minimizing the influence of velocity-changing collisions in Doppler-free saturation spectroscopy
Auteurs : H.-D. Kronfeldt [Allemagne] ; G. Klemz [Allemagne] ; D. Ashkenasi [Allemagne]Source :
- Optics Communications [ 0030-4018 ] ; 1994.
Abstract
A method based on homodyne mixing is described which facilitates the use of rf-modulation of the pump beam for laser saturation spectroscopy together with conventional kHz lock-in amplifiers yielding a substantial reduction of disturbing pedestals present due to collisions in an atomic vapour. The technique benefits also from the significant improvement in the signal to noise ratio when transferring the Doppler-free signal to a frequency domain of several MHz where the interfering laser noise is low. These experimental procedures allow measurements of high quality saturated absorption spectra in vapour cells of otherwise unfavourable high gas pressure such as in commercial see-through hollow-cathodes. In addition we report the detection of an optogalvanic signal at rf-modulation (3.3 MHz).
Url:
DOI: 10.1016/0030-4018(94)90248-8
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Kronfeldt</name><affiliation wicri:level="4"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Optisches Institut, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin</wicri:regionArea><placeName><region type="land" nuts="3">Berlin</region><settlement type="city">Berlin</settlement></placeName><orgName type="university">Université technique de Berlin</orgName></affiliation></author><author><name sortKey="Klemz, G" sort="Klemz, G" uniqKey="Klemz G" first="G." last="Klemz">G. 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The technique benefits also from the significant improvement in the signal to noise ratio when transferring the Doppler-free signal to a frequency domain of several MHz where the interfering laser noise is low. These experimental procedures allow measurements of high quality saturated absorption spectra in vapour cells of otherwise unfavourable high gas pressure such as in commercial see-through hollow-cathodes. In addition we report the detection of an optogalvanic signal at rf-modulation (3.3 MHz).</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Berlin</li></region><settlement><li>Berlin</li></settlement><orgName><li>Université technique de Berlin</li></orgName></list><tree><country name="Allemagne"><region name="Berlin"><name sortKey="Kronfeldt, H D" sort="Kronfeldt, H D" uniqKey="Kronfeldt H" first="H.-D." last="Kronfeldt">H.-D. Kronfeldt</name></region><name sortKey="Ashkenasi, D" sort="Ashkenasi, D" uniqKey="Ashkenasi D" first="D." last="Ashkenasi">D. Ashkenasi</name><name sortKey="Klemz, G" sort="Klemz, G" uniqKey="Klemz G" first="G." last="Klemz">G. Klemz</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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