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Sales & Tech Support: 231-935-4044 or [email protected]

$ 3,650.00

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MESOS Faraday Rotators - 4500 nm to 4600 nm


EOT’s MESOS line of Faraday devices build on over 30 years of experience in successfully protecting lasers from destabilizing and potentially damaging back reflections. The MESOS line has been specifically designed to meet the needs of the 4.5 µm (4500 nm to 4600 nm) laser market.  

Our MESOS rotators deliver industry-best reliability while providing superior performance and maintaining very high transmission. 

EOT's MESOS products rely on the Faraday effect from high Verdet constant, low absorption materials to rotate the plane of linearly polarized light in the forward direction and an additional 45° of non-reciprocal rotation in the reverse direction.



  • Completely passive; no tuning required
  • Stable performance to 2.5 W
  • Rugged design suitable for harsh operating environments
  • All isolators contain escape ports; all rejected beams are deflected at 90°


  • Input/output waveplates can be included to adjust for various linear polarization angles
  • Customization available


  • Environmental Sensing
  • Spectroscopy
  • Medical Systems, Research, and Device Manufacturing
Clear Aperture 4 mm
Transmission at 22 °C
Power Handling 2.5 W

Product specifications are subject to change. All products are RoHS compliant.
NOTE: Return loss-free working distance ≥25 mm for a collimated beam



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