Rectangular, Continuously-Variable, Reflective (Metallic) Neutral Density (ND) Filter
Ideal for Building a Variable Attenuator
This Thorlabs' Rectangular Continuously Variable, Reflective (Metallic) ND Filter is ideal for mounting on a transition stage for use as a variable attenuator. This filter is made from a UV Fused Silica glass substrate and has a mental (Inconel) coated. The Inconel film is a very hard metallic alloy that is resistant to aging under normal conditions. The Inconel coating will oxidize at elevated temperatures; it is recommended that the Neutral Density filter be used at temperatures below 100° C. The use of an Inconel coating ensures that the spectral response of this ND filter is very flat from the UV out to the Mid-IR.