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公开(公告)号:US5427051A
公开(公告)日:1995-06-27
申请号:US64386
申请日:1993-05-21
申请人: Randolph E. Maxwell , Curtis E. Scott , Mary S. Kaliszewski , Marshall G. Jones , Lionel M. Levinson , Carl E. Erikson
发明人: Randolph E. Maxwell , Curtis E. Scott , Mary S. Kaliszewski , Marshall G. Jones , Lionel M. Levinson , Carl E. Erikson
摘要: Polycrystalline alumina bodies have been converted to sapphire by a solid state conversion process in which a localized energy source is used to heat only a portion of the body to a temperature above 1800.degree. C. Using a laser as the energy source resulted in conversion to sapphire in less than an hour. The polycrystalline alumina bodies had a magnesia content below 50 wppm, an average grain size below 100 microns, and a density greater than 3.97 g/cc.
摘要翻译: 多晶氧化铝体已经通过固态转化过程转化为蓝宝石,其中局部能量源仅用于将身体的一部分加热至高于1800℃的温度。使用激光作为能量源导致转化为蓝宝石 在不到一个小时内。 多晶氧化铝体的氧化镁含量低于50wppm,平均粒度小于100微米,密度大于3.97g / cc。
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公开(公告)号:US4937421A
公开(公告)日:1990-06-26
申请号:US375235
申请日:1989-07-03
CPC分类号: B23K26/0069 , B23K26/009 , B23K26/18 , C21D10/005 , C21D7/04
摘要: A laser peening apparatus and method for peening a workpiece utilizing a laser beam is described. The system includes a foil aligned with a surface of the workpiece to be peened and lasing the aligned foil surface. The foil absorbs energy from the beam and a portion of the foil vaporizes, which creates a hot plasma within the foil. The plasma creates a shock wave which passes through the foil and peens the workpiece surface.
摘要翻译: 描述了使用激光束对工件进行喷丸的激光喷丸设备和方法。 该系统包括与待加工的工件的表面对齐并且对齐对准的箔表面的箔。 箔从梁吸收能量,并且箔的一部分蒸发,这在箔内产生热等离子体。 等离子体产生冲击波,穿过箔片并磨损工件表面。
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公开(公告)号:US5569399A
公开(公告)日:1996-10-29
申请号:US376196
申请日:1995-01-20
CPC分类号: B23K26/362 , B23K26/40 , B23K26/402 , B23K2203/30 , B23K2203/50 , Y10S438/94
摘要: This invention relates to the modification of lasing medium surfaces, such as crystals, to reduce the internal reflections that contribute to amplified spontaneous emission (ASE) losses. A laser ablation treatment involves focusing an optical irradiation means on a target surface having desired ablation pattern and ablating the target surface according to the selected ablation pattern. A cross-hatch pattern on the target surface is secured by the target surface being mounted onto a precision motor driven translation stage and stepped throughout the desired ablation pattern. The optical irradiation means are oriented initially at 45.degree. to the target surface length and subsequently rotated by 90.degree..
摘要翻译: 本发明涉及激光介质表面如晶体的改进,以减少有助于放大的自发发射(ASE)损耗的内部反射。 激光烧蚀处理包括将光学照射装置聚焦在具有期望的消融图案的靶表面上,并根据所选择的烧蚀图案烧蚀靶表面。 目标表面上的交叉影线图案被安装到精密电动机驱动平移台上的目标表面固定,并且贯穿所需的消融图案。 光照射装置最初定向到目标表面长度45°,然后旋转90°。
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