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

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.