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Frequency stability measurements on polarization-stabilized He-Ne lasers
Applied Optics
|June 10, 2010
Summary
This study demonstrates that Helium-Neon (He-Ne) lasers stabilized by matching orthogonal polarization modes achieve high frequency stability. These lasers offer excellent performance for precision measurement applications.
Area of Science:
- Atomic, Molecular, and Optical Physics
- Laser Physics and Technology
Background:
- Helium-Neon (He-Ne) lasers are widely used in scientific and industrial applications.
- Precise frequency stabilization is crucial for many applications, including metrology and spectroscopy.
Purpose of the Study:
- To present detailed stability measurements of He-Ne lasers stabilized using intensity matching of orthogonal polarization modes.
- To evaluate the long-term frequency accuracy and stability of these laser systems.
Main Methods:
- Stabilization of six He-Ne lasers by matching the intensity of two orthogonal polarization modes.
- Frequency monitoring of five lasers over 1 month and one laser over 2 years.
Main Results:
- All lasers demonstrated a stability of 1 part in 10^10 over hourly periods.
- Stability better than 1 part in 10^8 was achieved over 1 year.
- Absolute accuracy of approximately 1 part in 10^9 is attainable with 6-12 month calibration intervals.
Conclusions:
- He-Ne lasers stabilized by polarization intensity matching offer high frequency stability and accuracy.
- These 1-mW lasers are rugged, simple to operate, and suitable for demanding applications.
