Rubidium isotope shift measurement using noisy lasers
نویسندگان
چکیده
The data that students collect from the typical advanced undergraduate experiment on saturated absorption spectroscopy (SAS) of rubidium can be used to measure isotope shift and thus lead an estimate isotopic ground-state energy shift. This helps refine their “picture” atomic ground state. We describe theoretically why SAS works well with free-running laser diodes, demonstrate this fact experimentally using lasers tuned either principal near-infrared transitions, provide extension modulation transfer method.
منابع مشابه
Heterodyning of AlGaAs lasers: direct frequency measurement of the isotope shift in the oxygen atom.
Semiconductor diode lasers have already been proved to be suitable sources of radiation for applications in atomic and molecular physics.' Several methods have been developed to improve their spectral purity and tunability. In particular, the sensitivity of these lasers to optical feedback has been exploited advantageously to narrow their linewidth and to control the emission wavelength by usin...
متن کاملLamb-dip stabilized 543-nm He-Ne lasers and isotope shift of Ne 3s2→ 2p10 transition
Internal-mirror 543-nm He-20Ne and He-22Ne lasers are frequency-stabilized to the Lamb-dip of their tuning curves. Frequency stability of 2×10−11 and frequency resettability of 4×10−9 (or 2 MHz) are achieved. The absolute frequencies of the two lasers are determined by frequencycomparing with an iodine-stabilized 543-nm laser. The isotope shift between 20Ne and 22Ne is measured to one order of ...
متن کاملProspects for Mixed-Isotope Bose-Einstein Condensates in Rubidium
James P. Burke, Jr.,1 John L. Bohn,2 B. D. Esry,1 and Chris H. Greene1 1Joint Institute for Laboratory Astrophysics and the Department of Physics, University of Colorado, Boulder, Colorado 80309-0440 2Quantum Physics Division, National Institute of Science and Technology, Boulder, Colorado 80309 (Received 7 July 1997) We calculate binary collision parameters for mixtures of ultracold gases of 8...
متن کاملTHE INTERSTELLAR RUBIDIUM ISOTOPE RATIO TOWARD r OPHIUCHI A
The isotope ratio Rb/Rb places constraints on models of the nucleosynthesis of heavy elements, but there is no precise determination of the ratio for material beyond the solar system. We report the first measurement of the interstellar Rb isotope ratio. Our measurement of the Rb i line at 7800 for the diffuse gas toward r Oph A yields Å a value of (1 j) that differs significantly from the meteo...
متن کاملIsotope Shift in Mg I
The lines of the Mg I spectrum, lying in the visible and in the photographic infrared regions, have been examined and some of them found to show structure. It is pointed out that the structure should be attributed to isotope shift, which, in the case of the 3s3p 'P —3s3d 'D series, owes its origin to the fact-that the smd 'D terms, perturbed by the p''D term, have passed on to this term some of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Physics
سال: 2021
ISSN: ['0002-9505', '1943-2909']
DOI: https://doi.org/10.1119/10.0003540