stokesmeter™ polarimeter description
Shown below are actual screen displays:
The Poincare sphere representation gives a quick and easy-to-understand 3 dimensional visualization of the complete state of polarization based on the 4 Stokes parameters s0, and normalized s1, s2 and s3. The polarization ellipse is the familiar 2 dimensional representation of the polarization state of the measured input beam.
Rapid sampling of the normalized Stokes parameters s0, s1, s2 and s3 permits the polarization state to be statistically monitored so more complicated aspects of stability, drift and noise can be recorded, analyzed and displayed.
This screen displays the StokesMeter alignment with respect to the measured laser beam
This screen displays the StokesMeter calibration matrix
together with detailed sensor information.
Constructing a new calibration matrix requires additional optional components of a 360º polarizer circle containing a Glan Thompson prism, a quarter wave plate mounted in a 360º circle and an additional detector (about $5K).
stokesmeter polarimeter specifications
|Calibration wavelength:||HeNe 632.8nm laser under 1 mW (other laser wavelengths optionally available)|
|Clear aperture:||1 mm diameter|
|Measurement speed:||Few Milliseconds|
|Maximum absolute error:||.02 of a Stokes parameter|
|Absolute error (averaged):||.008 of a Stokes parameter|
|Computer (not included):||Windows 7/VISTA/XP/2000 with an available PCI slot|
|Weight:||Approximately 8 lbs.|
|Power requirements:||PCI interface card is powered by your computer|
|Size:||Approximately 4" x 6" x 12"|
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