【摘要】 <正> 近来,金属蒸气激光器,其中特别是铜蒸气激光器在医学研究和临床、高速照相和同位素分离应用中有很高的使用价值。这类激光器的增益高,反转寿命短,激光脉宽一般为20～30ns。 实验证明靠改变稳定腔参数来提高这类激光器输出的激光的方向性是困难的,需要考虑使用非稳定腔。 图1给出我们设计的望远镜或非稳腔示意图。更多还原

【Abstract】 An analysis is made of the possibility of using unstable resonators in reducing the divergence of radiation from a high-gain, short inversion lifetime metal vapor laser. Comparison is made of the output laser beam characteristics with plane-concave and those of telescopic resonators. It is shown that to obtain an output beam with low divergence in such a laser, unstable resonators must be used.更多还原