Techwin high-power SLD (SLED) light source is a high-stability source designed for scientific research and industrial production; internally installed high-power, broadband SLD (SLED) module. Aiming at special characteristics of SLD (SLED) laser, Techwin SLD (SLED) light source employs specialized protective measurement on circuit design and optical path processing in order to protect the laser from the reflected light and the surge of current or voltage, thus ensuring that the light source can operate safely and stably in a long time.