Off-axis metalisch-beschichtete parabolische Spiegel

Off-axis metalisch-beschichtete parabolische Spiegel

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Material Aluminium
Diameter tolerance +0.0/-0.1 mm
Angle 90°
Clear aperture >90%
Focal length tolerance ±1%
Surface figure <λ/2 @ 632.8 nm (PV)
Surface roughness <6 nm
Laser damage threshold Protected Aluminum: >0.25 J/cm² for 10 ns pulses @ 1064 nm
Protected Gold: >0.9 J/cm² for 10 ns pulses @ 1064 nm
The main property of Off-axis parabolic mirror is to focus light at an angle with beam propagation axis. This allows to avoid comatic aberration (or coma) that would emerge in case of using spherical mirror at an angle. Off-axis parabolic mirrors come into assistance where usage of transmitting optics is limited, for example due to chromatic aberrations, group velocity dispersion (GVD) or spectral bandwidth. Standard items comprise parabolic mirrors machined by diamond turning technique and coated with protected gold and silver coatings.
varna Aluminum Substrate Mirrors
varna Mounting Plates Also Available
varna Available in 30°, 60°, or 90° Off-Axis

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Items per page page
Angle, deg Coating Diameter, mm Y Offset Axis, mm Parent Focal length, mm Reflected Effective FL Delivery Product ID / Drawings Price Action
90 Protected Aluminum 25.4 25.4 12.7 25.4 Request 1-OPM-254-0254-26A01 Request REQ
90 Protected Aluminum 25.4 50.8 25.4 50.8 Request 1-OPM-254-0508-26A01 Request REQ
90 Protected Aluminum 25.4 101.6 50.8 101.6 Request 1-OPM-254-1016-26A01 Request REQ
90 Protected Aluminum 50.8 50.8 25.4 50.8 Request 1-OPM-508-0508-26A01 Request REQ
90 Protected Aluminum 50.8 101.6 50.8 101.6 Request 1-OPM-508-1016-26A01 Request REQ

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