A new control device for Photodynamic Therapy(PDT) laser system is proposed in this paper. The accuracy measurement of light dose in cancer therapy using the laser is very important role, so the laser output require that high speed and statistical out...
A new control device for Photodynamic Therapy(PDT) laser system is proposed in this paper. The accuracy measurement of light dose in cancer therapy using the laser is very important role, so the laser output require that high speed and statistical output control. The developed control device is possible to accurate and statistical control output using constant current control. The final beam power is 300mW max. at the 600nm wavelength. The laser power supply was designed to protect the resonator from the over-current and in rush-current etc. The experimental result show that laser beam power increase linearly from 10mW to 300mW for input current. The radiation type are CW, LONG PULSE, SHORT PULSE, SUPER PULSE, BURST PULSE. We can adjust the exposure time from several milli-second to several minute, and according to this experiment, we can make the variable type of power, radiation, exposure time that requested by the PDT system.