iigrate.com

International Intellectual Group, Inc. (I.I.G.) develops software and provides technical services focused on diffraction gratings. Drawing on more than 30 years of experience modeling relief and phase gratings, the company created PCGrate®, a tool for analyzing and optimizing absolute diffraction efficiency using a boundary integral equation method. Its software supports work in spectroscopy, astronomy, telecommunications, lithography, and nanotechnology, and is available in PCGrate-S(X) versions, with demo editions and product purchase options offered through the company.

Beyond software, I.I.G. provides services and technical resources related to grating performance and optical materials. These include refractive-index measurements, diffraction-efficiency and scattered-light measurements, groove-profile measurements, and calculations. The website also offers documentation, certificates, references, and product information to support users. I.I.G. serves customers internationally and lists distributors in China and India, alongside its U.S. address in Staten Island, New York. The company’s work brings together expertise in theoretical physics, applied mathematics, and computer science to address complex grating-modeling needs.