Electronic Retuning of Acousto-Optic Laser Mode Locker. Experimental study

The effect of electronic retuning of acoustic resonances in an acousto-optic laser mode locker is investigated theoretically and experimentally. In the approximation of plane acoustic waves, the problem of excitation of the Fabry-Perot acoustic resonator by a plate piezoelectric transducer is solved with taking into account real parameters of a RF generator and matching elements. The resonances were retuned by changing reactive matching elements (inductance coil and capacitor) connected between the generator and the transducer. In the experiment, an acousto-optic cell made of crystalline quartz with a two-sectional lithium niobate transducer was used.