Study of key technologies on High power LD pumped double cladding Yb3+ doped fiber laser

As the representation of the third generation laser device high power double cladd fiber laser is applicatted in industry process and laser beam weapons. The developments of Yb3+ doped fiber lasers is introduced in this paper. The relationship between pumped threshold value and output power is analyzed in theory. One experiment device on high power LD pumped Yb3+ doped double cladding fiber laser is designed.The key technologies in the experiment are concluded. The obtained result can be a reference for developing the proper laser equipment.