We inscribed uniform, mm thick volume Bragg gratings in polymer with parallel NUV fs beams reaching 1st order diffraction efficiency > 93% at 532nm. Linear polarisation (TE) couples strongest and circular polarisation weakest due to polarisation dependent filamentation.
© 2013 OSA
W. Perrie, L. Ye, O. Allegre, E. Fearon, S. P. Edwardson, and G. Dearden, "Femtosecond Inscription of Volume Phase Gratings in Poly(methyl)methacrylate and Effects of Polarisation Inscription," in Advanced Solid-State Lasers Congress, G. Huber and P. Moulton, eds., OSA Technical Digest (online) (Optical Society of America, 2013), paper JTh2A.16.
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