TUNING OF THE EMISSION FREQUENCY OF RING YAG-ND3+ CHIP LASERS

Piezoelectric tuning of the emission frequency of a monolithic ring YA G:Nd3+ laser with a nonplanar cavity was achieved. The maximum tuning range was 2.3 GHz when the ray-contour perimeter was 30 mm. Under cond itions of resonant modulation of mechanical stresses the rate of tunin g could reach 35 MHz/V. Qualitative estimates were obtained of the con tributions made to the change in the YAG:Nd3+ emission frequency by th e deformation of the ray contour and by the photoelasticity effect whe n the YAG:Nd3+ crystal was mechanically stressed.