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Related Experiment Videos

Laser sources for precision spectroscopy on atomic strontium.

N Poli1, G Ferrari, M Prevedelli

  • 1Dipartimento di Fisica and LENS, Instituto Nazionale di Fisica Nucleare, Sezione di Firenze, Italy.

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|March 11, 2006
PubMed
Summary

We developed a compact laser system for precise atomic strontium spectroscopy. This setup enables advanced cooling and trapping, paving the way for portable optical atomic clocks.

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Area of Science:

  • Atomic Physics
  • Laser Spectroscopy
  • Quantum Metrology

Background:

  • High-precision spectroscopy requires stable and tunable laser sources.
  • Atomic strontium is a promising candidate for optical atomic clocks due to its favorable atomic properties.

Purpose of the Study:

  • To develop a compact and versatile laser system for high-precision spectroscopy of laser-cooled atomic strontium.
  • To enable advanced cooling and trapping techniques for strontium atoms.
  • To lay the groundwork for realizing transportable optical atomic standards.

Main Methods:

  • Utilizing semiconductor laser sources for cooling, trapping, and optical pumping of atomic strontium.
  • Implementing a 689 nm laser with a linewidth < 1 kHz for second-stage cooling to the recoil limit.

Related Experiment Videos

  • Employing a 922 nm laser for optical trapping near the magic wavelength.
  • Performing frequency measurements of the 0-1 intercombination line.

    • Main Results:

    • A laser system delivering specific power outputs at 461 nm, 497 nm, 689 nm, and 922 nm.
    • Achieved second-stage cooling of atomic strontium to the recoil limit.
    • Successfully loaded multi-isotope strontium mixtures into a conservative dipole trap.
    • Demonstrated a frequency measurement of the 0-1 intercombination line with a relative accuracy of 2.3 x 10(-11).

    Conclusions:

    • The developed laser setup is simple, compact, and effective for high-precision strontium spectroscopy.
    • The system facilitates advanced laser cooling and trapping of atomic strontium.
    • This work represents a significant step towards the development of transportable optical atomic clocks.