还需要更多信息?

应用说明书、文章、电子通讯、软件下载、播客、移动应用程序等等,应有尽有!

切记阅读我们的博客,从我们的应用和工程人员口中了解最新的技术资讯、提示、技巧和想法!

教育资源


UV纳秒激光

激光微细加工最常见的介质为Nd:YVO4 operating at 355nm wavelength. The UV laser is generated using two non-linear optics that convert the wavelength from 1064nm to 532nm, and then from 532nm to 355nm.  During each conversion step some power and pulse energy are lost in the process, typically around 50%.  Therefore a 1064nm laser at 20W will provide around 7W at 355nm.  The UV laser technology is extremely mature and has been used in the industrial marketplace for many years for a wide variety of machining and marking applications.  As with any frequency converted laser the non linear crystals used for the conversion are consumables but last a long time with typical lifetimes in the 8-10,000 hour range.  This lifetime period is only used when the laser is firing.  The schematic drawing shows a highly simplified version of the elements for wavelength conversion for a UV nanosecond laser. Aside from the laser medium and non linear crystals the other major component is the Q switch that directly controls the pulse frequency, and indirectly controls the pulse width that the laser produces at a certain frequency.  Lower frequencies provide shorter pulse (超短脉冲激光) 持续时间,30 kHz条件下通常约为20纳秒,200 kHz条件下升至100纳秒。
UV激光示意图