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Interferometry using subnanosecond pulses from TEA nitrogen lasers
Applied Optics
|February 16, 2010
Summary
Triethylamine (TEA) nitrogen lasers are effective for high-speed plasma interferometry. This technique captures detailed images of short-lived plasmas, like those in a plasma focus device, with extremely brief exposure times.
Area of Science:
- Plasma physics
- Optical diagnostics
- Laser technology
Background:
- High-speed optical plasma interferometry is crucial for studying transient plasma phenomena.
- Short-lived plasmas, such as those generated in plasma focus devices, require advanced diagnostic techniques for characterization.
Purpose of the Study:
- To demonstrate the applicability of triethylamine (TEA) nitrogen lasers for high-speed optical plasma interferometry.
- To evaluate the effectiveness of these lasers in imaging short-lived plasmas.
Main Methods:
- Utilized TEA nitrogen lasers emitting at 3371 Angstroms.
- Employed high-speed optical plasma interferometry.
- Focused on the dense phase of a 30-kJ plasma focus device.
Main Results:
- Successfully demonstrated the applicability of TEA nitrogen lasers for this technique.
- Obtained interferograms of the dense phase of the plasma focus.
- Achieved exposure times of less than 500 picoseconds.
Conclusions:
- TEA nitrogen lasers are suitable for high-speed optical plasma interferometry of short-lived plasmas.
- The demonstrated method allows for detailed imaging of dense plasma phases with picosecond resolution.
