Plasma & Gas density measurement
SID4 V Vacuum
Phasics is innovating by proposing the first off-the-shelf vacuum compatible wavefront sensor on the market. The SID4 V is designed to perform wavefront measurements under high vacuum. the wavefront measurement is realized in-situ in the same condition as the experiment. Our new SID4 V vacuum wavefront sensor is also used to characterize laser beams after compression inside the compressor vessel. Finally, gas jet and plasma density are now measured as close to the target as possible.
BENEFITS: With Phasics’s unique strategy it’s now possible to correct the aberrations of every single optical element up to the target location inside the vacuum chamber.
VACUUM COMPATIBLE & HIGH RESOLUTION | DESIGNED FOR VACUUM DOWN TO 10-6 mbar
- Vacuum compatibility > 10-6 mbar
- High resolution 160 x 120 phase pixels
- Spectral range from 400 nm to 1100 nm
- Diverging beam compatible
- Invariant to thermal and mechanical vacuum constraints
- Tolerates vacuum-cycles without any performance decrease
- Both functional under vacuum and atmospheric pressure
- Low outgassing
|Vacuum compatibility||> 10-6 mbar|
|Wavelength range||400 - 1100 nm|
|Aperture dimension||4.73 x 3.55 mm2|
|maximum NA (optional software necessary)||0.2|
|Spatial resolution||29.6 µm|
|Phase & intensity sampling||160 x 120|
|Accuracy||15 nm RMS|
|Resolution (Phase)||2 nm RMS|
|Acquisition rate||60 fps|
|Real-time processing frequency||7 Hz (full resolution)|
|MTBF||> 10 years|
|Dimensions (w x h x l)||54 x 46 x 75.3 mm|
|Weight||~ 250 g|
SID4 Density software
SID4 DENSITY software package supports the whole process to measure gas and plasma electron density. It calculates density maps from phase acquisition. It also offers various options for acquisition and data analysis.
|Application||Any axisymmetric monoatomic gas jet/plasma for inverse-Abel transform analysis|
|Probe source||White light (halogen), LED, laser or fs-laser|
|Pressure||From 2 to 300 bars|
|Plasma length||Depends on the imaging system (typically 2 mm long and diameter of 0.2 mm)|
|Acquisition||Real Time, programmed, trigger|
|Settings||Wavelength, magnification, jet direction, gas type|
|Analysis||Density map & profiles, Symmetrization, filters|
Performances such as the spatial resolution or the density resolution entirely depend on both the optical set-up (imaging system, probe source) and the injected gas (molar refractivity). Please contact us for an estimation of specifications for your set-up.
As an example, for an laser produced plasma using an Argon gas jet at working pressure between 2 and 300 bars, the lowest measured Argon density in a single shot is: 1017 particles/cm3 with a nozzle of 1.5 mm diameter.