The qualification of the transmitted wavefront error (TWE) and surface figure error (SFE) of optical systems or filters at the designed wavelength after coating can be challenging to achieve. Indeed, most of the metrology is performed with 633 nm HeNe Fizeau interferometers. For optics and coating manufacturers, Phasics provides Kaleo MultiWAVE dynamic interferometers and modular wavefront sensing solutions. The Phasics solution set covers a large wavelength range: UV, visible, NIR, SWIR, MWIR and LWIR offering a large choice for the test wavelengths.
Complex optical coating induces stress to the optical surface. This stress leads to surface deformation, thanks to Phasics technology's high dynamic range, it is possible to perform accurate surface figure measurement even with tens of microns of departure.