Circular output from a high power Nd:YLF slab laser
Circular output from a high power Nd:YLF slab laser
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高功率 Nd:YLF 板条激光器的圆形输出
DOI：
10.1117/12.759662
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Mackenzie J
中科院分区：
文献类型：
--
作者：
Mackenzie J
掺钕氟化钇锂(YLF)激光器传统上受到晶体相对较低的抗张强度的限制。当对固态激光器进行功率调整时，增益介质几何形状、掺杂水平和泵浦方案的选择取决于最小化热致应力的影响。到目前为止，板条结构由于其良好的热管理，是最成功地扩展了Nd：YLF激光器的平均功率。然而，为了有效的高辐射激光作用，在腔模和平面增益体积之间也需要有良好的重叠。我们给出了端面泵浦板条激光器的性能特性，它采用稳定的低损耗谐振腔结构，将输出耦合器处的圆腔模式转换为板条增益元件中的极大长宽比椭圆光束，以匹配泵浦体积。用于变换光束形状的光学装置也适用于双程板条放大器结构。在较弱的Nd：YLF1053 nm跃迁上，利用单片增益元件和来自三个空间复用二极管棒的110W泵浦功率，获得了50W的偏振连续输出功率。激光阈值约为7W，斜率效率相对于入射功率为46%。
Neodymium-doped Yttrium Lithium Fluoride (YLF) lasers have traditionally been power-limited by the relatively low tensile strength of the crystal. When power-scaling solid-state lasers, the choice of the gain media geometry, the doping level, and the pumping scheme is dictated by minimizing the impact of thermally induced stress. To date the slab architecture has been the most successful for scaling the average-power of Nd:YLF lasers due to its favorable thermal management. However, for efficient high-radiance laser action it is also necessary to have a good overlap between the cavity mode and the planar gain volume. We present the performance characteristics for an end-pumped slab-laser utilizing a stable low-loss resonator configuration that transforms a circular cavity mode at the output coupler into a very high aspect ratio elliptical beam in the slab gain element to match the pumped volume. The optical arrangement for transforming the beam shape is also suitable for a double-pass slab amplifier configuration. A polarized CW output power of 50W, on the weaker Nd:YLF 1053nm transition was obtained with a single slab gain element and 110W of incident pump power from three spatially multiplexed diode bars. Laser threshold was around 7W and the slope efficiency, with respect to incident power, 46%.
Nd:YAG 板中的热效应：3D 建模以及与实验的比较
影响因子：
1.3
作者：
P. Hello;E. Durand;P. Fritschel;C. Man
通讯作者：
C. Man
全固态高功率传导冷却 Nd:YLF 棒状激光器。
影响因子：
3.6
作者：
Yoshihito Hirano;T. Yanagisawa;S. Ueno;T. Tajime;Osamu Uchino;T. Nagai;Chikao Nagasawa
通讯作者：
Chikao Nagasawa
用于大体积 TEM00 模式操作的伸缩谐振器
影响因子：
3
作者：
D. Hanna;C. Sawyers;M. Yuratich
通讯作者：
M. Yuratich