一、引言自六十年代末加拿大Defence ResearchEstablishment发明TEA CO_2激光器之后,1970年渥太华的Lumonics公司在加拿大政府许可下致力于脉冲TEA CO_2激光器的设计制造,在工业应用的研究过程中公司人员发现,TEA脉冲输出的激光非常适合作非冲击式的标记。1976年该公司的第一台商品,名为Laser-mark系统首次用于生产线,作软饮料包装的日期的标记。该系统是每分钟作90个标记的 I. INTRODUCTION After the invention of TEA CO_2 laser by Canadian Defense Research Establishment in the late 1960s, 1970’s Ottawa-based Lumonics Co., Ltd., with the permission of the Canadian government, devoted itself to the design and manufacture of pulsed TEA CO_2 laser. During the course of industrial application, the company found that TEA The pulsed laser is ideally suited for non-impact marking. In 1976, the company’s first product, called the Laser-mark system, was first used on production lines to mark the date of soft drink packaging. The system is 90 marks per minute