微型高重复频率激光二极管抽运固体激光器的窄脉宽抽运技术

微型化激光二极管(LD)抽运高重复频率固体激光器在工程应用方面总是存在器件散热与体积之间的矛盾。窄脉宽激光二极管抽运技术的使用,不仅提高了产品的光电技术指标,而且将关键元器件的散热功率降到原先的30%,有效地解决了微型元器件散热与体积之间的矛盾,使激光器的整体性能有了显著提高。在工作重复频率2.5 kHz,抽运脉宽120 μs的条件下,实现了峰值功率12.1 kW,脉冲宽度约为7.7 ns,光束质量因子M2约为1.7的激光脉冲输出,并使激光器在－55～＋75 ℃温度条件下长期稳定工作。窄脉宽抽运技术使整机系统存在很大的拓展空间,在用户需要时可将工作重复频率提高到5 kHz,甚至更高。

Narrow Pumping Width Technology in Miniature High-Repetition Diode-Pumped Solid-State Laser

There is always a contradiction between the heat-sinking capability and the volume in the engineering applications of the micro-diode-pumped solid-state laser (DPL). Using of narrow pumping width technology not only improves the products in the quality of photoelectric technology, but also decreases the heat output in key parts of apparatus to 30% of original level. It effectively solves the problem which is the heat output of the tiny parts of apparatus and improves the overall performance of the laser. Under the conditions of repeat frequency 2.5 kHz and pumping duration 120 μs, it achieves the peak power of 12.1 kW, impulse width of 7.7 ns and the laser beam quality factor M2 1.7 in pulse output while the laser works stably from -55 ℃ to ＋75 ℃. The technology greatly improves the developable space for equipment system. Clients could increase the repeat frequency to 5 kHz or even higher if needed.