通过实验在高增益的TEA CO_2激光器中，得到了基模环形光斑输出。
The ring output spot of the fundamental mode is obtained from a high gain TEA CO2 laser by experiment.
对薄片激光器的谐振腔进行了设计，采用平凹腔的结构，并使其在稳区工作并有较大的基模体积。
Resonator cavity of thin disk laser is designed, using plane-concave cavity to make it work stably and obtain large fundamental mode volume.
结果表明，热透镜效应对输出功率和频率特性影响相当大，对基模输出激光器的影响最为突出。
It is shown that the thermal lensing effects have considerable influence on the output and resonance frequencies, particularly for the fundamental mode lasers.
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