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Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm.

Y Takata1, S Nakajima2, J Kobayashi1

  • 1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.

The Review of Scientific Instruments
|September 2, 2019
PubMed
Summary
This summary is machine-generated.

We created a new laser system for precise spectroscopy of ytterbium atoms. This system achieves a narrow linewidth, enabling high-resolution atomic clock measurements.

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Area of Science:

  • Atomic Physics
  • Laser Spectroscopy
  • Quantum Metrology

Background:

  • Precise laser systems are crucial for high-resolution atomic spectroscopy.
  • Stabilizing lasers to optical cavities is essential for atomic clock applications.
  • Ytterbium (Yb) atoms possess a narrow optical clock transition suitable for frequency standards.

Purpose of the Study:

  • To develop a novel laser system for high-resolution spectroscopy of the Yb clock transition.
  • To achieve narrow laser linewidths through stabilization to an ultra-low-expansion glass cavity.
  • To demonstrate the performance of the developed laser system for atomic clock applications.

Main Methods:

  • An interference-filter stabilized external-cavity diode laser (IFDL) emitting at 1156 nm was utilized.
  • A simple current feedback system was employed to stabilize the laser frequency to a high-finesse ultra-low-expansion glass cavity.
  • High-resolution clock spectroscopy of Yb atoms at 578 nm was performed using the stabilized laser.

Main Results:

  • The developed laser system successfully stabilized the frequency to the optical cavity.
  • The stabilized laser exhibited a linewidth of less than 320 Hz.
  • The system demonstrated suitability for high-resolution spectroscopy of Yb atoms.

Conclusions:

  • A robust and simple laser system for Yb atom spectroscopy has been developed.
  • The system achieves narrow linewidths, crucial for advanced atomic clock development.
  • This work contributes to the advancement of optical atomic clocks and precision measurements.