水泥构件防渗漏漆 玉彩石乳胶漆 防水地坪工程地坪油漆即通过选定的上述工艺技术直接进行预制棒芯层及包层的生产该方法受外围技术设备和工艺技术本身的制约生产出的预制棒单棒可拉丝长度受到了极大的限制妨碍了生产效率的提高对提高光纤产量降低成本以及光纤降及极为不利20世纪80 IF代以后预制棒的生产多采用
 激光器方面所表现出的优反待性主妥有：数值孔径大i达09,便于泵浦光的树合模场面积可A且保持孔1N]距较小的周期性排列结构外包层为孔径较大孔rEJ距较大的周期性结构利用声光调制器获得调Q激光输出脉宽lOns峰值功率5000mW,激光器输出功率为**近报道利用PCF研制大功率PCF激光器.

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