Gratings & Diffractive Optics

TRANSMISSION GRATINGS 600 l/mm at 840 nm

These high-efficiency grating are popular for Optical Coherence Tomography (OCT) and other applications in the region around 840 nm. They are created by using coherent laser light to write the interference pattern in dichromated gelatin. After processing, the grating is capped with a protective glass cover and then AR coated. The results are a grating with low scatter, high diffraction efficiency and low wavefront distortion. The grating is durable and can be cleaned using the same methods to clean AR coated optics.