一种掺钕光纤激光器与倍频技术实现的数值模拟

从双包层光纤激光器的速率方程和光传输方程出发，建立数学模型，进行数值计算并对掺钕光纤激光器输出功率沿光纤的分布以及不同光纤长度下抽运功率和输出功率沿光纤的分布进行了数值模拟。以808nm半导体激光器为抽运源，掺钕双包层光纤为增益介质，并以KTP作为倍频晶体，计算并模拟其倍频效率和相位匹配角。最后，对光纤激光器及其倍频的实现进行了模拟研究。结果表明，该光纤激光器能够高效率地实现可见光输出。

A neodymium doped fiber laser and frequency 

On the basis of the rate equation and the optical transmission equation for a double clad fiber laser, a mathematical model was established to calculate the output power for the optical fiber laser. Then, the distribution of output power along optical fiber and distributions of output power and pump power in different fiber lengths were simulated numerically for a neodymium doped fiber laser. By taking a 808 nm semiconductor laser as pumping source. By taking a neodymium doped double clad fiber as gain medium and KTP crystal as a multiplier, the efficiency of doubling frequency and phase angle of the laser were calculated and simulated. Finally, the frequency doubling of fiber lasers was simulated. Experimental results show that the fiber laser can achieve visible light output in high efficiency.