Polarimeter

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Key Features

  • Compact
  • No moving parts
  • Broad wavelength range
  • Versatile Configuration
  • User-Friendly Operation
  • High Sensitivity
Our NEW user-friendly Liquid Crystal Stokes vector Polarimeter (PMI-2000) provides high accuracy and reliability in an easy-to-use instrument, suitable for manufacturing and laboratory applications. Our Polarimeter is a compact system with convenient computer control that accurately measures Stokes parameters 10 times per second. It quantifies the State of Polarization (SOP) and graphically displays the Poincaré Sphere, Polarization Ellipse, or running chart. The Meadowlark Optics system contains no spinning waveplates, motors, or other moving parts to wear or cause vibrations. Patented algorithms provide high accuracy and calibration versatility.

Polarimeter

The controller of the Polarimeter PMI-2000 is integrated into the optical head. Temperature control and Stokes vector calculation are autonomously completed server-side in the Controller. This reduces the data volume of USB calls from PC to Controller.

 

The Stokes parameters comprise a four-component vector that completely characterizes the polarization of a light beam. The components of the Stokes vector are simple combinations of the intensity outputs from linear polarizers or circular polarizers.

The PolarVIEW software is a user-friendly interface which displays polarization data and allows the user to perform various operations:

  • Display four Stokes parameters
  • Readout temperature
  • Display light levels
  • Save function for continuous measurement mode

PMI-2000 SPECIFICATIONS

Wavelength Range

450 – 1100 nm

Absolute Degree of Polarization Accuracy

≤ 1 %

Measurable State of Polarization

Entire Poincaré Sphere

Measurement Frequency

10 Hz

Azimuth Accuracy

± 0.54°

Ellipticity Accuracy

± 0.008°

     Standard Deviation for Ellipticity

< 0.0008 (no averaging)

     Standard Deviation for Angle of Linear States

< 0.011° (no averaging)

     Standard Deviation for S1, S2 of Linear States

< 0.0004 (no averaging)

     Standard Deviation for S3

< 0.0005 (no averaging)

Warm-up Time for Rated Accuracy

15 minutes for 20 ˚C room temperature

Minimum Optical Power to maintain accuracy*

10 µW

Resolution of Stokes vector components

0.001

Re-calibration Process

3 minutes, performed as needed with Eigenstate Set

Input Aperture

2 mm diameter, knife edge

Input Fiber Connector

Optional, 11 mm diameter

Fiber Coupling Adaptor

Optional

Maximum Operating Temperature

35 ˚C

Input Power Supply

12 V, 2 A

Power Supply Ratings

Included 5 plugs for different regions

Optical Head Dimensions

55.88 mm (W) x 76.20 mm (H) x 69.34 mm (L)

Command and Control Interface

USB 2.0 Micro A

These specifications describe performance at 23 ± 3 °C ambient temperature.
*sensitivity can be increased to 1 mW by special request.

Eigenstate Calibration Set is available separately.

Ordering Information – Contact Us for a Quote

PMI-2000 ORDERING INFORMATION

Wavelength Range

Version

Part Number

450 – 1100 (nm)

Visible

PMI – VIS

900 – 1700 (nm)

Near Infrared

PMI – NIR

STANDARD DEVIATIONS OF CALIBRATION STATE POLARIZATIONS

Stokes vector Rate (Hz)

S1

S2

S3

Ellipticity

Orientation (degrees)

16.1

0.00038

0.00021

0.00042

0.00079

0.01077

20.8

0.00062

0.00057

0.00080

0.00055

0.01799

23.8

0.00053

0.00053

0.00092

0.00069

0.01520

26.6

0.00032

0.00028

0.00115

0.00057

0.00924

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POLARIZER Operating Principles

Polarizer Selection Guide

request a custom quote or get technical answers

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