Method and apparatus for optical information recording capable of precisely controlling laser light emission

An optical information recording apparatus, comprising:

• means for generating a peak level current waveform having a high level;
• means for generating a bias level current waveform having a low level which is lower than the high level;
• means for generating a normal boost level current waveform and a low boost level current waveform which has a lower boost level than that of the normal boost level current waveform;
• and
• means for driving a laser light source with the high level current waveform superimposed on the low level current waveform in a peak level light emission, the normal boost level current waveform superimposed on the low level current waveform in a normal boost level light-emission, and the low boost level current waveform superimposed on the low level current waveform in a peak level sampling operation.

A method for recording optical information, the method comprising the steps of:

• generating a peak level current waveform having a high level;
• generating a bias level current waveform having a low level which is lower than the high level;
• generating a normal boost level current waveform and a low boost level current waveform which has a lower boost level than that of the normal boost level current waveform;
• driving a laser light source with the normal boost level current waveform superimposed on the low level current waveform in a normal boost level light emission;
• and
• switching a drive current waveform for the laser light source to the low boost level current waveform superimposed on the low level current waveform in a peak level sampling operation.