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公开(公告)号：EP1772526A4
公开(公告)日：2011-07-27
申请号：EP05767220
申请日：2005-07-28
发明人： AKABA TAKASHI , TSUBOTA SHUHO , NISHIKAWA KENJI , SUGIMOTO NORIAKI , KUSHIMOTO SHOJI , ISHIDE TAKASHI , OHTA TAKAHIRO
CPC分类号： B23K26/0066 , B23K26/067 , B23K26/0676 , B23K26/0869 , B23K26/103 , B23K2201/06 , B23K2201/10
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公开(公告)号：EP1199128A4
公开(公告)日：2007-06-20
申请号：EP01917689
申请日：2001-03-30
CPC分类号： B23K26/0608 , B23K26/0604 , B23K26/067 , B23K26/08 , B23K26/082 , B23K26/1429
摘要： Oscillation of a laser oscillator is so controlled that arc discharge from a GMA electrode is caused after start of the oscillation of a laser beam (T2=T1+ΔT5) or simultaneously with the start (ΔT5=0) and that the oscillation is stopped after the arc discharge from the GMA electrode is stopped (T4= T3+ΔT6) or simultaneously with the stop(ΔT6=0). A coaxial laser machining head is so constituted that a GMA electrode (33) is arranged coaxially with first and second split laser beams (24b, 24c) in a spatial region (24d) of the first and second split beams (24b, 24c) split by first and second reflecting mirror (27, 28). Alternatively, the GMA electrode (33) is arranged coaxially with a laser beam (24f) in a spatial region (24g) defined in the laser beam (24f) by talking out a part (24e) of the laser beam by first and a second reflecting mirrors (87, 88).
摘要翻译： 激光振荡器的振荡被如此控制，使得在激光束的振荡开始之后（T2 = T1 +ΔT5）或者与开始时同时（ΔT5= 0）引起GMA电极的电弧放电，并且在振荡停止之后 停止GMA电极的电弧放电（T4 = T3 +ΔT6）或停止（ΔT6= 0）。 同轴激光加工头是这样构成的，即GMA电极（33）与第一和第二分裂激光束（24b，24c）同轴地布置在第一和第二分裂光束（24b，24c）的空间区域（24d）中 通过第一和第二反射镜（27,28）。 或者，GMA电极（33）与激光束（24f）同轴地布置在激光束（24f）中限定的空间区域（24g）中，通过将激光束的一部分（24e）通过第一和第二 反射镜（87,88）。
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公开(公告)号：EP1811047A4
公开(公告)日：2011-08-03
申请号：EP05767038
申请日：2005-07-28
发明人： AKABA TAKASHI , TSUBOTA SHUHO , NISHIKAWA KENJI , SUGIMOTO NORIAKI , KUSHIMOTO SHOJI , ISHIDE TAKASHI , OHTA TAKAHIRO
IPC分类号： C21D9/08 , B23K26/00 , B23K26/08 , B23K26/10 , B23K101/06 , C21D1/09 , C21D1/30 , C21D1/34 , C21D9/50
CPC分类号： C21D1/09 , B23K26/0066 , B23K26/0884 , B23K26/103 , B23K2201/06 , C21D1/30 , C21D1/34 , C21D9/08 , C21D9/50
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公开(公告)号：EP1198039A4
公开(公告)日：2004-07-07
申请号：EP01921844
申请日：2001-04-16
发明人： MIZUI JYUNICHI , MIKI SUSUMU , KATO MASAHIRO , AKABA TAKASHI
CPC分类号： H01S3/0941 , H01S3/005 , H01S3/0606 , H01S3/07 , H01S3/08072 , H01S3/08095 , H01S3/0816 , H01S3/094057
摘要： A laser beam emitted from an LD device is focused to and around a laser beam optical path region A of a slab YAG crystal (21) by means of a concave mirror and a pair of reflecting mirrors, a duct lens, or cylindrical lenses. There are two maximum values P1, P2 at and near the ends A1, A2 of the laser beam optical path of the slab YAG crystal in the focused beam intensity distribution in the direction of the side face (the Y-axis direction) of the slab YAG crystal, that is, the distribution is a double-peak distribution.
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公开(公告)号：EP1189101A4
公开(公告)日：2004-05-12
申请号：EP01921845
申请日：2001-04-16
发明人： IKEDA NAOAKI , AKABA TAKASHI , NODA OSAMU , MIKI SUSUMU , OHTANI YUICHI
CPC分类号： G02F1/3501 , G02F1/37 , G02F2001/3505 , G02F2001/3546
摘要： A nonlinear optical crystal element (21) for wavelength conversion is surrounded by a heat sink (22) having cooling fins (23a, 23b, 23c). Cartridge heaters (24) are arranged on the heat sink (22) to heat the nonlinear optical crystal element (21) evenly, and the temperature is adjusted by a heater controller (30). Laser radiation is incident on the nonlinear optic element (21), which converts wavelength to produce radiation of a shorter wavelength. When the repetition frequency of the laser radiation is high, the heaters (24) are not energized and heat is removed by the heat sink (22). When the repetition frequency of the laser radiation is low, on the other hand, the heater (24) is energized to maintain the temperature of the nonlinear optical crystal element (21) so that conversion efficiency may improve.
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