放电等离子体烧结法制备的 Nd:Lu2O3 陶瓷的高效激光运转
Efficient Laser Operation Based on Transparent Nd:Lu2O3 Ceramic Fabricated by Spark Plasma Sintering
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摘要: 文章主要针对基于放电等离子体烧结方法制备的透明 Nd:Lu2O3 陶瓷激光性能展开实验研究。研究结果显示, 退火后的 Nd:Lu2O3 陶瓷样品激光性能远优于退火前的样品:当采用直线腔测试方法时, 退火后样品获得了最高功率为 880 mW, 最大斜效率为 40% 的输出;当采用 V 型腔测试方法时, 退火后样品获得了最高为 1.25 W, 最大斜效率为 38% 的输出, 输出光谱包含了两条位于 1 076.7 nm和 1 080.8 nm 的谱线, 但功率的进一步提高受到严重的热透镜效应限制。实验结果表明, 通过放电等离子体烧结方法可以制备出高光学质量的 Nd:Lu2O3 陶瓷样品。Abstract: High efficient laser operation based on the SPSed (spark plasma sintering) Nd:Lu2O3 ceramic was investigated in this paper. Laser performance of Nd:Lu2O3 samples before and after anneal were tested respectively, and results show that the samples after anneal have much better optical quality. When a linear cavity was used, the annealed Nd:Lu2O3 ceramic sample can output maximum power of 880 mW with a corresponding slope efficiency of 40%. When a V-shape cavity was used, annealed Nd:Lu2O3 ceramic sample can output maximum power of 1.25 W with a corresponding slope efficiency of 38%. The laser spectral lines at 1 076.7 nm and 1 080.8 nm oscillated simultaneously, but the thermal lensing effect limited the increase of output power of the Nd:Lu2O3 ceramic laser. Experimental results showed that the high optical quality Nd:Lu2O3 ceramic can be fabricated by the spark plasma sintering method.