Ferroelectric domain inversion has been demonstrated in BaMgF<sub>4</sub> . Transparency has been measured to <140nm, and no change in transmission was measured under 157-nm irradiation for >1.1×10<sup>9</sup> shots at 2mJ/cm<sup>2</sup> per pulse. First-order quasi-phase-matched generation of 157 nm is predicted by use of grating periods as long as 1.5μm. This material should permit shorter-wavelength χ<sup>(2)</sup> frequency-mixing processes than with any other crystalline material.
© 2001 Optical Society of America
(160.2260) Materials : Ferroelectrics
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(230.4320) Optical devices : Nonlinear optical devices
S. C. Buchter, T. Y. Fan, V. Liberman, J. J. Zayhowski, M. Rothschild, E. J. Mason, A. Cassanho, H. P. Jenssen, and J. H. Burnett, "Periodically poled BaMgF4 for ultraviolet frequency generation," Opt. Lett. 26, 1693-1695 (2001)