Eigenstate Calibration Set

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Eigenstate Calibration Set

Meadowlark Optics Eigenstate Calibration Set is a tool which produces six polarization eigenstates: linear polarized light at 0, 90, +45, -45 degrees as well as circular right-handed and left-handed polarized light.
These states are created by using a precision dichroic linear polarizer in a black housing and a precision quarter waveplate in a blue housing. The housings are CNC machined so that the accuracy of the angles is better than 1 arc minute. Pins on the housings mate to a v-groove and a flat groove in a quasi-kinematic fashion, while magnets provide holding force. This scheme facilitates precise, simple and fast indexing of the polarization eigenstates. Large arrows on the housing indicate the transmission axis of the polarizer and the fast axis of the waveplates for ease of use. Available for wavelength ranges from 450-1700 nm.
Eigenstate Retarders are additional retarders that can be purchased at the same time as your Eigenstate Calibration Set and Polarimeter. Wavelengths available from 450-1700 nm.
  • Ellipsometry
  • Polarization control
  • Polarization analysis
  • Calibration accessory for
  • PMI Series polarimeters


  • Compact
  • No moving parts
  • Broad wavelength range
  • Fiber and free space versions
  • Visible and near infrared versions


Specifications - Polarimeter
Absolute Degree of Polarization Accuracy ≤ 1%
Measurement Frequency 10 Hz
Resolution 0.001 of Strokes Parameter
Maximum Operating Temperature 40˚ C
Optical Head Dimensions 2.83 × 1.75 × 1.75 in.
Minimum Optical Power to maintain accuracy* 10 µW
Input Aperature 2 mm
Specifications describe performance at 23 ± 3˚C ambient temperature
*Sensitivity can be increased to 1 µW by special request
System Requirements:
-USB Port
-Use of LavVIEW Instrument Library requires LabVIEW version 6.1 or higher


Ordering Information - Eigenstate Calibration Set
Item Part Number
Eigenstate Calibration Set ECS-λ
Eigenstate Retarders EGR-λ
Please specify your operating wavelength λ in nm when ordering.