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Updated: Jun 19, 2026
08:22
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Ultrahigh-spectral-purity laser for the VIRGO experiment
Optics Letters
|October 31, 2009
Summary
We stabilized a Nd:YAG laser for gravitational wave detection. Its frequency stability and low fluctuations are competitive with other advanced oscillators, crucial for the VIRGO detector.
Area of Science:
- Physics
- Astronomy
- Laser Technology
Background:
- Gravitational wave detectors like VIRGO require highly stable lasers.
- Precise frequency control is essential for detecting minute spacetime distortions.
Purpose of the Study:
- To stabilize the frequency of a Nd:YAG laser.
- To measure its frequency fluctuations and Allan variance.
- To assess its suitability for the VIRGO gravitational wave detector.
Main Methods:
- Frequency stabilization techniques applied to a Nd:YAG laser.
- Measurement of spectral density of frequency fluctuations (20 Hz–20 kHz).
- Measurement of Allan variance (0.02 ms–10^5 s).
Main Results:
- Successful frequency stabilization of the Nd:YAG laser.
- Short-term frequency fluctuations are comparable to other leading oscillators.
- Achieved Allan variance better than 10^-14 for measurement times < 0.1 s.
Conclusions:
- The stabilized Nd:YAG laser meets stringent requirements for gravitational wave detection.
- Its performance is suitable for enhancing the sensitivity of the VIRGO interferometer.
- This laser technology advances capabilities in fundamental physics research.
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