Abstract

To the best of our knowledge, only preliminary studies of photorefractive effects in the ultraviolet (UV) spectral range have been reported up to now, e.g. in KH₂PO₄ [1], RbZnBr₄ [2] (both at low temperatures), and in LiNbO₃ [3, 4] and LiTaO₃ [5] in the near UV. Photorefractive materials operating in the UV however could be very useful for all types of coherent optical beam interactions, e.g. beam amplification, dynamical holography, phase-conjugation or photolithographic applications where the use of shorter wavelengths leads to an increased resolution.

© 1991 Optical Society of America