Three-grating monolithic phase-mask for the single-order writing of large-period gratingsYannick Bourgin, Ismo Vartiainen, Yves Jourlin, Markku Kuittinen, Frédéric Celle, Svetlen Tonchev, Olivier Parriaux and Tapio NiemiJ. Eur. Opt. Soc.-Rapid Publ., 6 (2011) 11016sDOI: https://doi.org/10.2971/jeos.2011.11016s
