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首页> 外文会议>Frontiers in ultrafast optics: biomedical, scientific, and industrial applications XVII >Ultrashort pulse induced laser welding of glasses without optical contacting
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Ultrashort pulse induced laser welding of glasses without optical contacting

机译：无光接触的超短脉冲玻璃激光焊接

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摘要

We report on ultrashort pulse induced welding of fused silica without previously optical contacting of the samples. We used a TruMicro 2020 by TRUMPF delivering bursts of intense ultrashort laser pulses with an individual pulse energy of up to 10 μJ, an intraburst pulse separation of 20 ns and a burst repetition rate of 200 kHz. With this setup we could realize a large pool of molten material with a length of up to 450 μm and a diameter of around 160 μm. If the laser focus is placed near the surface of a glass sample the low viscosity of the hot material induces bulging of the surface and ejection of the molten material. This molten material can be used to fill a gap of up to 3 μm between fused silica samples. We also determined the breaking strength with a three-point bending test. The determined maximal value of 73 MPa is equivalent to 85% of the stability of the pristine bulk material.
机译：我们报道了熔融石英的超短脉冲诱导焊接，而以前没有样品的光学接触。我们使用了通快的TruMicro 2020，可发出强烈的超短激光脉冲，脉冲能量高达10μJ，脉冲内脉冲间隔为20 ns，脉冲重复频率为200 kHz。通过这种设置，我们可以实现一大堆熔融材料，其长度可达450μm，直径约为160μm。如果将激光焦点放在玻璃样品的表面附近，则热材料的低粘度会引起表面鼓胀和熔融材料的喷射。这种熔融材料可用于填充熔融石英样品之间最多3μm的间隙。我们还通过三点弯曲试验确定了断裂强度。所确定的最大值73 MPa相当于原始散装材料稳定性的85％。

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  • 会议地点 San Francisco(US)
  • 作者

    Soeren Richter; Felix Zimmermann; Dirk Sutter; Aleksander Budnicki; Andreas Tunnermann; Stefan Nolte;

  • 作者单位

    TRUMPF Lasertechnik GmbH, Johann-Maus Straße 2, 71254 Ditzingen, Germany,Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universitaet Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany;

    Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universitaet Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany;

    TRUMPF Laser GmbH, Aichhalder Straße 39, 78713 Schramberg, Germany;

    TRUMPF Laser GmbH, Aichhalder Straße 39, 78713 Schramberg, Germany;

    Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universitaet Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany,Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Straße 7, 07745 Jena, Germany;

    Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universitaet Jena, Albert-Einstein-Str. 15, 07745 Jena, Germany,Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Straße 7, 07745 Jena, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    femtosecond laser materials processing; heat accumulation; optical contacting; laser welding of glass;

    机译：飞秒激光材料加工；热量积聚；光学接触玻璃激光焊接;

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