Influence of the shape of a crystalline active element on the output power of a single-mode laser

V. Gudkov, Z. Radzhabova
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Abstract

An investigation was made of the influence of the shape of a YAG:Nd3+ active element on the power of the fundamental TEM00 mode. It was found that if shallow grooves were formed in the active element between the crystallographic axes, at the places where the pumping induced the greatest birefringence, the output power increased by 40–50%. These grooves improved the removal of heat from the central part of the active element responsible for generating the TEM00 mode and thus reduced the thermal deformation distorting the front of the light wave.
晶体有源元件的形状对单模激光器输出功率的影响
研究了YAG:Nd3+有源元件的形状对TEM00基模功率的影响。结果表明,在抽运诱导双折射最大的地方,在有效元件的结晶轴之间形成浅槽,输出功率提高40 ~ 50%。这些凹槽改善了从负责产生TEM00模式的主动元件的中心部分去除热量,从而减少了使光波前端扭曲的热变形。
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