Ma. Bolshtyanskii et al., ANOMALOUS BEHAVIOR OF THE COEFFICIENT OF 2ND-HARMONIC CONVERSION DURING THE READOUT AND WRITING OF CHI(2) GRATINGS, JETP letters, 57(8), 1993, pp. 473-476
An abrupt jump in the efficiency of second-harmonic conversion as a fu
nction of the intensity of the incident IR light has been observed dur
ing the readout and writing of chi(2) gratings in several multicompone
nt glasses. A possible mechanism for the effect is discussed.