REVERSIBLE DOMAIN REVERSAL IN TRIGLYCINE SULPHATE CAUSED BY A LASER BEAM

With the advent of lasers it is now possible to produce local thermal shocks and we shall describe some experiments where by looking very accurately at the pyroelectric signal, we have seen some evidence of predeterminate nucleation sites. We have also been able to locate with a microsecond accuracy the time of domain creation or destruction which is obviously impossible with the naked eye, in the new experiments of etch patterns