LED带抽运Nd∶YAG激光器

为了研究抽运光源光谱与增益介质吸收光谱对发光二极管(LED)带抽运激光器输出效率的影响，进一步提高输出效率，将光谱信息引入激光速率方程中，建立了LED带抽运速率方程, 采用该方法对LED带抽运Nd∶YAG激光器进行了理论分析和实验验证。结果表明，利用红外LED对Nd∶YAG激光器进行侧面抽运，当抽运能量为9.1mJ时，取得了能量为607μJ的1064nm激光输出，达到实验中最高的倾斜效率15.5%，此时光转换效率为6.67%;速率方程的计算求解和实验的输出能量二者基本吻合。这一结果对研究提高LED带抽运激光器的输出效率是有帮助的。

LED band pump Nd:YAG laser

In order to study the influence of the pump light source spectrum and the absorption spectrum of the gain medium on the output efficiency of light-emitting diode(LED) band pump laser, and to improve the output efficiency, the spectral information was introduced into the laser rate equations to establish the rate equations of the LED band pump Nd∶YAG laser. Theoretical analysis and experimental verification of LED band pumped Nd∶YAG laser were carried out. The Nd∶YAG laser was side-pumped by infrared LEDs. Under the pump energy of 9.1mJ, a 1064nm laser output with an output energy of 607μJ was obtained. The slope efficiency of this LED band pump Nd∶YAG laser was 15.5%, and the corresponding optical-to-optical efficiency was 6.67%. The results show that the calculated solution of the rate equations was basically consistent with the experimental output energy, which is helpful for the study of improving the output efficiency of LED band pump laser.