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Long-term frequency stabilization of a 16 m(2) ring laser gyroscope.

K U Schreiber¹, A Gebauer, J-P R Wells

¹Technische Universitaet Muenchen, Forschungseinrichtung Satellitengeodaesie Geodätisches Observatorium Wettzell, 93444 Bad Kötzting, Germany. schreiber@fs.wettzell.de

|June 5, 2012

Summary

This study frequency stabilized a helium-neon ring laser gyroscope to within 60 kHz for three months. Servo control of a pressure vessel negated atmospheric pressure variations, enhancing long-term stability.

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Area of Science:

Physics
Optical Engineering
Metrology

Background:

Ring laser gyroscopes are crucial for inertial navigation and sensing.
Long-term frequency stability is a key challenge for precision measurements.
Atmospheric pressure variations can significantly impact laser performance and stability.

Purpose of the Study:

To achieve and maintain high frequency stability in a helium-neon ring laser gyroscope.
To investigate and mitigate the effects of environmental factors, specifically atmospheric pressure, on laser frequency.
To demonstrate a method for long-term frequency stabilization of a ring laser system.

Main Methods:

Utilized a 16 m(2) helium-neon ring laser gyroscope.
Employed a servo control system acting on a pressure vessel enclosing the laser.
Used the beat frequency between the ring laser and an iodine-stabilized reference laser as a feedback signal.

Main Results:

Achieved frequency stabilization within 60 kHz over a three-month period.
Successfully compensated for atmospheric pressure variations.
Demonstrated the negation of atmospheric pressure influence on laser frequency.

Conclusions:

The developed servo control system effectively stabilizes the frequency of a ring laser gyroscope.
Compensating for atmospheric pressure variations is critical for achieving long-term stability.
This technique offers a viable solution for enhancing the precision of ring laser gyroscope systems.