400 nm -3.0µm PEM Optical Head, Aperture 23mm

Manufacturer's part number :


Manufacturer Hinds


Description :

Series II/FS50 optical head photoelastic modulator (PEM) use a symmetric or octagonal shape for the modulator optical element. A two-dimensional standing wave in the optical element doubles the retardation available for a given drive voltage. Series II modulators are particularly useful in the infrared spectrum. The optical head model II/FS50 offer two spectral range, version II/FS50-A is availale from 450nm to 3.0µm, and version II/FS50-B from 730nm to 3.0µm. Hinds application scientists are available to consult on the optimal material and model for your particular experimental setup.

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Technical Data :

  • Quote and availability


  • Optical Material: Fused Silica
  • Retardation Range for λ/4: 170nm - 2.0µm (version A) / 1.6µm - 2.6µm (version B)
  • Retardation Range for λ/2: 170nm - 1.0µm (version A) / 800nm - 2.5µm (version B)
  • Aperture: 23mm
  • Nominal Frequency: 50 KHz
  • Wide acceptance angle (+/- 20°)
  • Benefits

  • The Optical Head may be used in any orientation desired
  • PEM optical heads may be operated in a vacuum
  • AR coatings can be provided on a custom basis for any of our modulator optical elements. Both narrow-band and broad-band coatings are available.

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