CAJ | 학술논문

研制了一种单光纤耦合的柔性半导体激光加工光源,该光源由20个传导热沉封装的激光列阵以线阵合束方式耦合而成,在大通道工业水冷条件下,从600 μm芯径、NA为0.2的光纤中连续输出907 W功率,输出光束质量为47 mm·mrad,最终达到工件表面的功率密度为3.21×105 W/cm2,最大插头效率达39％.该激光光源具有直接应用在金属薄板焊接的潜力.
연제료일충단광섬우합적유성반도체격광가공광원,해광원유20개전도열침봉장적격광렬진이선진합속방식우합이성,재대통도공업수랭조건하,종600 μm심경、NA위0.2적광섬중련속수출907 W공솔,수출광속질량위47 mm·mrad,최종체도공건표면적공솔밀도위3.21×105 W/cm2,최대삽두효솔체39％.해격광광원구유직접응용재금속박판한접적잠력.
A high power fiber-coupled flexible source is fabracated in which 20 conduction cooled diode laser bars were intergrated in manner of linear array coupling.Under the macrochannel cooling with industrial water,a CW output power of 907 W,a beam parameter product of 47 mm · mrad,an optical power density of 3.21 × 105 W/cm2 and a maximum wall-plug efficiency of 39％ on the work piece are demonstrated from a 600 μm,NA 0.2 fiber.This source has a great potential to be directly adapted in materials processing,especially in metal sheet welding.