A mode‐selection technique is described which applies specifically to continuously pumped repetitivelyQ‐switched lasers. The technique is based on opening theQswitch just as the laser gain exceeds theQ‐switch hold‐off loss. This results in a reduction of the number of both longitudinal and transverse modes present in theQ‐switched output. Of particular interest is the simplicity and convenience of this scheme, since it does not require the introduction of any components inside the laser cavity. Experimental data are presented on a continuously pumped repetitivelyQ‐switched Nd: YAlO3laser.