LaMgAl11O19:Co2+被动调Q铒玻璃激光器研究

综述了被动调Q铒玻璃激光器的发展概况,推导了被动调Q铒玻璃激光器输出脉冲能量、脉宽的解析表达式,数值模拟了腔内损耗与输出脉冲能量、脉宽及峰值功率的关系以及输出脉冲能量与输入抽运能量的关系.设计了一台LaMgAl11O19:Co2 被动调Q铒玻璃激光器,实验验证了数值模拟分析结果.结果表明,腔内损耗增加将导致输出脉冲能量下降,脉宽变大,从而峰值功率降低.输入能量低于12 J时,输出只有单脉冲,当输入能量大于12 J时,输出会出现双脉冲.在8 J的电输入下,获得了峰值功率50 kW,2.7 mJ的1.535 tm激光输出.最后讨论了提高单脉冲能量的方法.

Er: Glass Laser with LaMgAl11O19:Co2+ Passive Q-Switch

The progress of the Er:glass lasers with passive Q-switch is discussed. The analytical expressions of the output energy and pulse width are derived. The energy, pulse width and peak power of the output pulse as functions of the cavity loss are numerically simulated. The relation between the output pulse energy and input pumping energy is numerically simulated. An Er:glass laser with LaMgAl11O19:Co2+ passive Q-switch was built to verify the numerical results. The results show that the increase of cavity loss results in widening of pulse width, decling of pulse energy and peak power of the output pulse. There is only single-pulse output when the input energy is less than 12 J. When the energy is over 12 J, it brings double-pulse output. 1.535 μm laser output with energy of 2.7 mJ and peak power of 50 kW was gained in the experiments by the power supply of 8 J. In the end, the methods to increase the output pulse energy are discussed.