섬유
laser materials processing applications at lawrence livermore national laboratory
- 출판일1999.03
- 저자
- 서지사항
- 등록일
2016.11.02
- 조회수
421
high power and high radiance laser technologies developed at lawrence livermore national laboratory (llnl) such as copper-vapor lasers, solid-state slab lasers, dye lasers, harmonic wavelength conversion of these lasers, and fiber optic delivery systems show great promise for material processing tasks. evaluation of models suggests significant potential for tenfold increases in welding, cutting, and drilling performance, as well as capability for applications in emerging technologies such as micromachining, surface treatment, and stereolithography. copper and dye laser systems are being developed at llnl for uranium enrichment production facilities. the goals of this program are to develop low-cost, reliable and maintainable industrial laser systems. chains of copper lasers operate at more than 1.5 kw output and achieve mean time between failures of more than 1000 hours. the beam quality of copper vapor lasers is approximately three times the diffraction limit. dye lasers have near diffraction limited beam quality at greater than 1.0 kw. diode laser pumped, nd'yag slab lasers are also being developed. cutting and drilling studies in titanium and stainless steel alloys show that cuts and holes with extremely fine features can be made with dye and copper-vapor lasers. high radiance beams produce low distortion and small heat-affected zones