Ongstad Andrew P, Guy Matthew, Chavez Joeseph R
Opt Express. 2016 Jan 11;24(1):108-13. doi: 10.1364/OE.24.000108.
We report on a high power Nd:YAG spinning disk laser. The eight cm diameter disk generated 200 W CW output with 323 W of absorbed pump in a near diffraction-limited beam. The power conversion efficiency was 64%. The pulsed result, 5 ms pulses at 10 Hz PRF, was nearly identical to the CW result indicating good thermal management. Rotated at 1200-1800 RPM with He impingement cooling the disk temperature increased by only 17 °C reaching a maximum temperature of ~31 °C. The thermal dissipation per unit of output power was 0.61 watt of heat generated per watt of laser output, which is below the typical range of 0.8-1.1 for 808 nm diode pumped Nd:YAG lasers.
我们报道了一种高功率钕钇铝石榴石（Nd:YAG）旋转盘激光器。直径8厘米的圆盘在近衍射极限光束中，利用323瓦的吸收泵浦产生了200瓦的连续波（CW）输出。功率转换效率为64%。脉冲结果为10赫兹脉冲重复频率（PRF）下的5毫秒脉冲，与连续波结果几乎相同，表明热管理良好。在1200 - 1800转/分钟的转速下旋转，通过氦气冲击冷却，圆盘温度仅升高17°C，最高温度达到约31°C。每单位输出功率的热耗散为每瓦激光输出产生0.61瓦热量，这低于808纳米二极管泵浦Nd:YAG激光器0.8 - 1.1的典型范围。
