【摘要】 单增益模块的无机液体激光体系在通过流动循环散热时,也导致抽运区域的增益介质在流动方向上产生了热梯度。而双增益模块的液体激光系统既能有效地散热,同时也避免了流动方向的热梯度,具有较好的性能。采用数值计算方法模拟了同样增益长度的单、双增益模块系统的热特性和输出激光的远场光斑分布,并进行了对比分析。结果表明双增益模块液体激光系统的性能明显优于单增益模块系统:远场光斑的峰值强度提高一个数量级,能量集中度和光束质量均得到明显的提高。更多还原

【Abstract】 Flowing circulation can emanate heat of liquid laser with single gain host,but it also arises heat gradient in the flowing direction.Double gain host can emanate heat effectively and avoid heat gradient in flowing direction,and possesses better performance.The heat character and far-field facula of liquid laser with single gain host and double gain host at the same gain length were simulated,and then compared.The result indicates the performance of the double gain host is much better than that of the single gain host:the peak intensity of far-field facular is enhanced by ten times,and the energy concentration extent and beam quality are both enhanced evidently.更多还原