SEMICONDUCTOR LASER DRIVING DEVICE, OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE

摘要

A semiconductor laser driving device is provided with a high frequency superimposing circuit (3) for superimposing a frequency current onto a laser driving current (6) of a semiconductor laser (1) provided in an optical head device; and a high frequency superimposition control circuit (5) which controls the frequency of the high frequency current corresponding to the temperature of the semiconductor laser (1).