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Double Stage Faraday Isolators
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Single-stage isolators providing an extinction ratio of > 30 dB are sufficient for most applications including fiber coupling or resonator alignment. For high-power lasers and optical amplifiers however, a double-stage isolator with reverse isolation > 60 dB has to be used. These are two Isolators in tandem on a common base, sharing a common center Polarizer. Isolation is doubled and transmittance is reduced to approximately the squared value. Net rotation can be ordered to be 0░ or 90░. All surfaces are AR-coated for maximum transmittance.
We can fine-tune the isolators to provide maximum transmission (> 90% per stage) and at the same time maximum extinction at any wavelength in region 0.8- 1.15 Ám. Available clear apertures are between 3 and 12 mm. Double Stage Isolators have output polarization in the same plane as the input, or optionally at 90░.
With help of tables below You can choose for Your needs one of our stadard isolator constructions or specify Your special wishes.

Please select one or more standard devices
Item
Units
MT-5/800-D
MT-8/1060-D
Center wavelength
nm
800
1060
1060
Bandwidth
nm
30
30
30
Reverse isolation
dB
≥60
≥65
≥65
Optical Aperture
Dia, mm
5
5
8
Transmission
%
≥75
≥75
≥75
Dimensions *
mm
87x49x42
90x61x53
112x64x57
Material
Option High Transmission (HT)
≥90%
Option Side Exit (SE)
yes/no
I am interested on
pcs
* The dimensions can have a small difference depending on used material.

or configurate Your taylor made double stage isolator

<<< possible wavelengthes from 800 to 1150 nm and aperture from 3 to 12 mm >>>
Wavelength, nm
Bandwidth, nm
Aperture, mm
Isolation, dB
Material
Transmission
Option SE
Q-ty, pcs
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