The related fast-forming laser diode energy source comprises: a source LD, a column mirror group included a fast-axis and slow-axis collimation column mirror with bus-bar vertically, a beam expander to expand the slow-axis parallel beam to let beam diameter at two directions as same cycle, and a frame or shell. Besides, it also contains a direction indicator, a beam-joining device, a coupled expander, a dynamic focus module, and an x-axis/y-axis scanning mirror. This invention has small size and well reliability. |