Device and method for multi-wavelength laser driving and system and method for multi-wavelength laser processing

A method for multi-wavelength laser driving, applicable to a first laser source and a second laser source having different laser wavelength ranges, comprising:

• generating, by a controller, a first driving signal according to setting data, wherein the setting data comprises a first driving period related to the first laser source;
• driving, by a first light source driver, the first laser source according to the first driving signal;
• by a feedback circuit, obtaining a first feedback signal in response to the first driving signal from the first laser source and generating a second driving signal according to the first feedback signal;
• and
• driving, by a second light source driver, the second laser source according to the first driving period and the second driving signal.

A method for multi-wavelength laser processing, applicable to surface processing for a material to be processed, comprising:

• generating, by a controller, a first driving signal according to setting data, wherein the setting data comprises a first driving period related to a first laser source;
• driving, by a first light source driver, the first laser source to emit light according to the first driving signal to heat the material to be processed for a first time;
• by a feedback circuit, obtaining a first feedback signal in response to the first driving signal from the first laser source and generating a second driving signal according to the first feedback signal;
• and
• driving, by a second light source driver, a second laser source to emit light according to the first driving period and a second driving signal to heat the material to be processed for a second time.