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首页 > 半导体技术 > 激光专家分析商务喷墨替代激光成趋势

激光专家分析商务喷墨替代激光成趋势

发表于:2009-06-08 16:57:53   点击: 1342
SMT产品,防静电产品,BGA返修台,回流焊——威力泰网上商城

                   最新全固化微型绿光激光器研制成功

 

"All-solid" refers to all components of the laser head was bonded with epoxy resin as a whole, the entire device without any need to adjust components, laser engraving machine expert analysis of the use of this device is very convenient.

 

“全固化”是指激光头的全部元件被用环氧树脂粘合为一个整体,整个器件中没有任何需要调整的元件,激光雕刻机专家分析这种器件的使用十分方便。全固化的微型全固态连续绿光激光器采用LD端面抽运Nd:YVO4激光晶体得到1064nm近红外激光,再用KTP晶体作腔内倍频得到532nm绿激光输出。

 

   采用808nm的1W的LD作为抽运光源。由于所用LD的输出功率比较小,因此提高器件的光-光转换效率是提高器件性能的关键。为此,采用半导体制冷器作为温度控制元件,对LD的温度进行控制,以使其工作波长和激光晶体的吸收波长峰值准确重合,提高对抽运光的吸收效率。把LD的工作波长调整到808.5nm。

 

   采用Nd:YVO4晶体作激光介质,掺杂浓度为3at%,a轴方向切割,长度为1mm,横截面尺寸为3×3mm2。采用端面同轴抽运方式使LD的抽运光束和所产生的1.064mm激光光束在空间上更好地耦合,以提高抽运效率。采用焦距为3mm的非球面透镜把LD的光束聚焦到Nd:YVO4晶体内部,焦点处光斑直径为100mm,抽运光从LD到Nd:YVO4晶体内部的总耦合效率为92%。

 

   用滤光器滤除输出光束中的808nm的抽运光和1064nm的基频光后,用光谱仪测量绿激光的波长,用共焦球面扫描干涉仪测量绿激光的纵模,用功率计测量532nm输出功率和稳定性。在LD发出的抽运功率为1W时,得到230mW的TEM00模532nm绿激光的稳定输出,光-光转换效率达23%,4小时的稳定性优于±3%,绿激光中有3-4个纵模,每个纵模的宽度小于40MHz(受仪器分辨率所限)。专业激光刻章机专家分析这种激光器的性能在同类产品中是最好的。此文章由无缝管整理,了解更多激光在无缝钢管高压锅炉管上面的应用,尽在天津流体管

 

 

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