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Updated: Jul 7, 2026
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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Compact diode-laser based rubidium frequency reference.
N Vukicevic1, A S Zibrov, L Hollberg
1Time and Frequency Div., Nat. Inst. of Stand. and Technol., Boulder, CO.
Summary
A new atomic vapor frequency reference using Raman scattering shows promise for compact, low-power, and acceleration-insensitive devices. Fractional frequency deviations below 5x10^-11 are achievable, advancing precision timing technology.
Area of Science:
- Atomic, Molecular, and Optical Physics
- Metrology and Scientific Instrumentation
Background:
- Precision frequency standards are crucial for advanced technologies.
- Existing atomic clocks can be bulky, power-hungry, or sensitive to environmental factors like acceleration.
Purpose of the Study:
- To evaluate the performance of a simple microwave frequency reference utilizing Raman scattering in atomic vapor.
- To explore design architectures for a compact, low-power, and acceleration-insensitive frequency standard.
- To determine the feasibility of achieving high fractional frequency deviations.
Main Methods:
- Experimental evaluation of a table-top microwave frequency reference.
- Utilizing Raman scattering in an atomic vapor medium.
- Analysis of various design architectures to identify optimal configurations.
Main Results:
- Demonstrated the potential for a compact and low-power frequency reference.
- Showcased insensitivity to acceleration as a key design advantage.
- Achieved fractional frequency deviations of less than or equal to 5x10^-11.
Conclusions:
- The Raman scattering atomic vapor frequency reference is a viable candidate for next-generation timing systems.
- Further development can lead to highly portable and robust precision frequency sources.
- The experimental results validate the design principles for future compact systems.
