A high quality fixed holographic grating was recorded in a photorefractive $\mathrm{Li}\mathrm{Nb}{\mathrm{O}}_3$ :Fe crystal at about $100°\mathrm{C}$ in a homemade temperature-controlled vacuum chamber. The recording was carried out using self-stabilization techniques with $\lambda =532\mathrm{nm}$ beams guided onto the crystal by polarization maintaining fibers. The diffraction efficiency of the fixed grating was $\eta =0.44$ when measured in the recording setup using the same $\lambda =532\mathrm{nm}$ recording beams. A compatible η was measured with $\lambda =633\mathrm{nm}$ in an auxiliary setup, and a $1\mathrm{mrad}$ angular Bragg selectivity at FWMH was estimated, thus demonstrating the uniformity and good quality of the fixed grating.

© 2008 Optical Society of America

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