Future energy scaling of high-energy chirped-pulse amplification systems will benefit from the capability to coherently tile diffraction gratings into larger apertures. Design and operation of a novel, accurate alignment diagnostic for coherently tiled diffraction gratings is required for successful implementation of this technique. An invariant diffraction direction and phase for special moves of a diffraction grating is discussed, allowing simplification in the design of the coherently tiled grating diagnostic. An analytical proof of the existence of a unique diffraction grating eigenvector for translational and rotational motion that conserves the diffraction direction and diffracted wave phase is presented.
© 2006 Optical Society of America
Diffraction and Gratings
Michael C. Rushford, William A. Molander, James D. Nissen, Igor Jovanovic, Jerald A. Britten, and C. P. Barty, "Diffraction grating eigenvector for translational and rotational motion," Opt. Lett. 31, 155-157 (2006)