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Eurys Series 800 nm Broadband Faraday Rotators & Optical Isolators - Large Aperture (>5 mm) Data Sheet

Eurys Series
800 nm Broadband Faraday Rotators and Optical Isolators for Ti:Sapphire Lasers - Large Aperture (>5 mm)

        

EOT’s Eurys Series 800 nm Broadband Faraday Rotators rotate the plane of polarized light 90° at 800 nm in the forward direction and 0° from 720-950 nm in the reverse direction while maintaining the light’s linear polarization.  When placed between crossed polarizers, a Broadband Faraday Rotator becomes a Broadband Optical Isolator.  Eurys Series broadband optical isolators provide high transmission in the forward direction and strongly attenuates back-reflected light between 720-950 nm in the reverse direction protecting Ti:Sapphire oscillators from the deleterious effects of back reflections and also eliminating preferential lasing at the lower gain wavelengths of Ti:Sapphire lasers.  Utilizing optics with low refractive indices and short optical pathlengths minimizes pulse broadening due to dispersion in the optics associated with ultra-short laser pulses.

Benefits:

· Eliminate ASE from high-gain amplifiers that can cause parasitic or relaxation oscillations

· Prevent preferential lasing at low-gain wavelengths by providing broadband isolation

Features:                                

· All devices are completely passive; no tuning is required

· Combination of low refractive index optics and short optical pathlengths minimizes pulse broadening that can be associated with ultra- short pulses

· All isolators contain escape ports; all rejected beams are deflected at 90°

Specificationsa:

 
Rotator
Isolatorb
Center Wavelength
800 nm
800 nm
Spectral Range
720-950 nm
720-950 nm
Polarizer Type
N/A
PBS Cube
Transmission at 22 °Cc
>98%
>92%
Isolation at 22 °C
N/A
>30 dB
Damage Threshold
5 J/cm2at 10 ns
2 kW/cm2 CW
1 J/cm2at 10 ns
2 kW/cm2 CW

aProduct specifications are subject to change.
Escape ports should be used if rejected light is >1 W or 0.15 J/cmat 10ns or forward light is >25 W. All stray beams should be properly terminated.
cAt center wavelength
Note: All products are RoHS compliant.
Dispersion: Some pulse broadening does occur when using EOT's Broadband Isolators. The Sellmeiers Equation for TGG used in the broadband isolators is: