双波长高功率半导体激光器波长耦合技术

Wavelength Coupling Technology of Double-wavelength High Power Laser Diode

介绍了非相干耦合技术中波长耦合原理及关键技术,根据波长需要设计耦合器件,自行设计了光学系统对光束进行扩束聚焦,通过实验将808nm和980nm两半导体激光迭阵光束通过此技术进行合束,最终实现更高功率输出,耦合效率为80%,光斑大小为2mm×2mm,可满足将半导体激光器直接应用于熔覆、焊接等场合。

Wavelength coupling principle and key techniques in incoherent coupling technology are introduced. According to wavelength requirements, coupling devices are designed. Optical systems are designed for beam blooming and focusing. In the experiment, two diode laser stack beams at 808 nm and 980 nm are coupled into one beam through the technology to achieve the higher output power, with the coupling efficiency up to 80% and the spot size at 2 min× 2 mm. It is demonstrated that this technology can satisfy the applications in which diode lasers are directly applied to cladding, welding and so on.