Technology for Polarization Measurement

Pure and Efficient Polarization Modulation

Hinds Instruments is the world's leading developer of technologies based on the principles of polarization modulation. Photoelastic modulators (PEMs) are key components in a diverse range of photonics applications. As such, Hinds has become a key contributor to a wide range of critical polarization-based measurements.

Learn about the Principles of Operation, and Unique Features, and Modes of Operation of our photoelastic modulators, here.
PEMs are made of isotropic optical materials and operate at a resonant frequency. Unique properties of the PEM include:

  • polarization purity
  • large aperture
  • high power handling capability - up to 5 GW/cm2 for some devices
  • large acceptance angle
  • wide range of products for different spectral regions, from vacuum UV to Terahertz
  • retardation stability
  • durability – some PEMs are still in use from 1977!

Whether you need a complete solution or a component for your application, we have the product for you.

Hinds Instruments is keenly aware of the current global shortage of IC chips. We are actively managing our supply chain to ensure that we have continued access to all the components required to build our leading-edge products. After a brief shortage during the first half of 2021, we have resumed full production of the PEM-200. We are now accepting orders for all product configurations. If you received a PEM-100 as a substitute during the shortage, Hinds is offering an upgrade to the PEM-200 electronics at discounted pricing. Please contact for further information.

PEM Technical Overview