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An ultrastable Michelson interferometer for high-resolution spectroscopy in the XUV
Optics Express
|April 4, 2015
Summary
We created a highly stable Michelson interferometer for split-pulse spectroscopy. This advancement enhances spectral resolution and precision in extreme ultraviolet frequency measurements.
Area of Science:
- Atomic, Molecular, and Optical Physics
- Spectroscopy
- Quantum Optics
Background:
- Precise control of optical path differences is crucial for high-resolution spectroscopy.
- Split-pulse techniques in the extreme ultraviolet (XUV) region require stable interferometers.
- High-order laser harmonics are a key source for XUV generation.
Purpose of the Study:
- To develop an ultra-stable Michelson interferometer for split-pulse XUV Ramsey-type spectroscopy.
- To achieve nanometer-level stability over meter-scale optical path differences.
- To enable enhanced spectral resolution and absolute frequency measurements in the XUV.
Main Methods:
- Implementation of active and passive stabilization systems in a Michelson interferometer.
- Utilizing a deeply unbalanced arm configuration.
- Generating high-order laser harmonics for XUV pulse production.
Main Results:
- Achieved nanometer-level instabilities over meters of relative optical path difference.
- Demonstrated an ultra-stable and accurately controllable interferometer.
- Enabled the production of precisely delayed pump pulses for XUV generation.
Conclusions:
- The developed interferometer significantly improves stability for XUV spectroscopy.
- This technology offers potential for enhanced spectral resolution in the XUV.
- The system advances the precision of absolute frequency measurements in the extreme ultraviolet spectrum.
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