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Mesos Series 4500 nm - 4600 nm Faraday Rotators & Optical Isolators Data Sheet

Mesos Series
4500 nm - 4600 nm Faraday Rotators and Optical Isolators


EOT’s Mesos Series Faraday Rotators rotate the plane of polarized light 45° in the forward direction and an additional 45° of non-reciprocal rotation in the reverse direction while maintaining the light’s linear polarization.  When placed between crossed polarizers, a Faraday Rotator becomes an Optical Isolator.  An Optical Isolator shields lasers from destabilizing and potentially destructive back-reflected light from interfaces on downstream optics or back-scattered ASE from optical amplifiers. Based on high Verdet constant rotating material and developed to work with up to 2.5 W of average input power in the 4500 nm - 4600 nm wavelength range, Mesos Series optical isolators provide the ultimate protection for polarized output from Quantum Cascade Lasers (QCLs).


· Eliminate frequency instability in QCLs

· Prevent optical damage to QCLs due to back reflections


· Rugged design suitable for harsh operating environments

· Optional λ/2 plate available for all isolators

Specificationsa, b:

4500-4600 nm Rotator
4500-4600 nm Isolator
Transmission at 22 ⁰C
Isolation at 22 ⁰C
>30 dB
Power Handling
2.5 W
2.5 W

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