Pompage optique et absorption saturée d'un faisceau d'ions rapides superposé à un faisceau laser continu

Beguin, F.; Gaillard, M.L.; Winter, H.; Meunier, G.

doi:10.1051/jphys:0197700380100118500

Cited by 14 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the laser intensity is reduced in the model, the linewidth indeed approaches 5 qdw (provided one also increases the lengths of the pump and probe regions to reduce transit-time-induced linewidth). In fact, it is easy to see intuitively why this is the correct limit, not qdw as claimed by Beguin et al [8]. At weak laser intensity, the hole burned in the velocity distribution by the pump region will have a Lorentzian profile of width qdw , reflecting the fact that only atoms whose Doppler-shifted resonant transition frequency is within a natural width of the laser frequency will be pumped.…”

Section: Theorymentioning

confidence: 79%

“…The full-width-half-maximum (FWHM) of the dip is 1.15 V, corresponding to 34.2 MHz. As we shall show below, correcting an error in previous theoretical treatments [8], the limit to the resolution of an experiment in which only one of the pump or probe regions is scanned turns out to be twice the natural linewidth. For the N .…”

Section: Methodsmentioning

confidence: 95%

“…Beguin et al [8] discuss the theory of ordinary in-flight Lamb-dip spectroscopy in some detail, using both a population model and a more accurate model employing the optical Bloch equations. In this section we will briefly outline our version of the theory, adding in rf magnetic resonance.…”

Section: Theorymentioning

confidence: 99%

“…In a careful study in Ba . [8], a resolution equal to just twice the natural linewidth was achieved.…”

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Laser-rf saturation spectroscopy: A novel fast-ion-beam sub-Doppler method

Holt¹,

Scholl²,

Rosner³

1997

Can. J. Phys.

View full text Add to dashboard Cite

We have extended the in-flight Lamb-dip technique of Dufay et al. [Phys. Rev. Lett. 37, 1678(1976] by adding a radiofrequency magnetic resonance region. This method allows sub-Doppler measurements of frequency intervals between optical transitions that have no level in common. We have used the method to measure the separation of the Ee and P Ee spectral lines in the P P n Ã -f P P n } (0,1) band of h N n P to be feE cm 3 . This represents an increase in accuracy by more than an order of magnitude over previous results. Our method can be used quite generally to achieve natural-linewidth-limited resolution in fast-ion-beam laser spectroscopy, and has particular advantages in the case of molecular spectroscopy.Résumé : Nous avons étendu le technique de mesure de l'effet Lamb en vol développée par Dufay et al. [Lett. Phys. Rev. 37, 1678(1976] en ajoutant un secteur de résonance magnétique opérant dans les radiofréquences. La méthode permet des mesures sous-Doppler d'intervalles de fréquence entre des transitions optiques sans niveau commun. Nous l'avons utilisée pour déterminer que la séparation entre les lignes spectrales Ee et P Ee, dans la bande P P n Ã -f P P n } (0,1) de h N n P , est feE cm 3 . Ceci améliore par un ordre de grandeur la précision des mesures existantes. Notre méthode peut être utilisée largement en spectroscopie à faisceau ionique rapide pour atteindre une résolution limitée par la largeur naturelle de bande. Elle présente des avantages certains en spectroscopie moléculaire. [Traduit par la rédaction]

show abstract

Section: Theorymentioning

confidence: 79%

Section: Methodsmentioning

confidence: 95%

Section: Theorymentioning

confidence: 99%

“…In a careful study in Ba . [8], a resolution equal to just twice the natural linewidth was achieved.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations