Optical disk recording/reproducing device employing waveform correction of laser output signal

An optical disk recording/reproducing device which records a signal on a disk using a laser irradiated from a laser element by a pulse signal, comprising:

• a detector for detecting an average level of a monitor signal obtained when a basic pulse signal is applied to said laser element when recording said basic pulse signal in a trial writing region of the optical disk;
• a storing unit for storing, in advance, an average level of a monitor signal of a reference basic pulse signal, when recording said basic pulse signal in a trial writing region of the optical disk, said detector detects the average level of said monitor signal of said basic pulse signal, and
• a controller for comparing the presently detected average level to a predetermined reference average level corresponding to said stored average level, and for correcting waveform of said basic pulse signal by adjusting a peak level and/or a bottom level of said basic pulse signal to be output such that the detected average level matches said reference average level, said controller compares the detected average level to said average level stored in advance to perform waveform correction of said basic pulse signal.