Adaptive diffraction grating based on intermetallic alloys with shape memory effect

A method for creating a diffraction grating (DG) with an in situ variable parameter is proposed. The adaptive DG for operation in visible and IR wavelength consists of the 2D matrix of composites with shape memory effect (SME) with thermally controlled shape. The experimental prototype of the adaptive DG sample was manufactured using the method of local ion etching is shown.