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首页> 外文会议>Conference on Nonlinear Optics Jul 28-Aug 2, 2002 null >Crystalline dot and line patterning with SHG in samarium bismuth borate glasses by YAG laser irradiation
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Crystalline dot and line patterning with SHG in samarium bismuth borate glasses by YAG laser irradiation

机译：YAG激光辐照硼酸铋铋玻璃中SHG的结晶点和线图案

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摘要

Transparent surface crystallized glasses in the rare-earth doped bismuth borate system have been successfully fabricated. The irradiation of CW YAG laser with a wavelength of 1064nm induces sharp refractive-index changes or crystalline dot formation, depending on Sm_2O_3 content in the glasses. In 10Sm_2O_3-30Bi_2O_3-60B_2O_3 glass, refractive-index changes (not crystallites) are induced by laser irradiations (power: 1W, time: l-250s), and spherical spots with 2-45μm are formed. In 12.5Sm_2O_330Bi_2O3-57.5B_2O_3 glass, crystalline dots with the diameters of 5-65μm are formed by laser irradiations (power:0.5-0.7W, times: l-250s). It is found that the crystalline dots generate second harmonic waves. Refractive-index changes by YAG laser irradiations are confirmed in 10Dy_2O_3-30Bi_2O_3-60B_2O_3 glass. In 10Sm_2O_3-35Bi_2O_3-55B_2O_3 glasses, 2-dimentional crystalline line patterns can be fabricated by scanning laser spots with the speeds of 1-10 μm·s~(-1). These crystalline lines have wave-guide structure with second order optical non linearity.
机译：已经成功地制造了稀土掺杂硼酸铋体系中的透明表面结晶玻璃。取决于玻璃中Sm_2O_3的含量，用波长为1064nm的CW YAG激光照射会引起急剧的折射率变化或晶点形成。在10Sm_2O_3-30Bi_2O_3-60B_2O_3玻璃中，通过激光照射（功率：1W，时间：1-250s）引起折射率变化（不是微晶），并形成了2-45μm的球形斑点。在12.5Sm_2O_330Bi_2O3-57.5B_2O_3玻璃中，通过激光照射（功率：0.5-0.7W，时间：1-250s）形成了直径为5-65μm的结晶点。发现结晶点产生二次谐波。在10Dy_2O_3-30Bi_2O_3-60B_2O_3玻璃中确认了通过YAG激光辐照引起的折射率变化。在10Sm_2O_3-3-35Bi_2O_3-55B_2O_3玻璃中，可以通过以1-10μm·s〜（-1）的速度扫描激光斑点来制作二维晶线图案。这些结晶线具有具有二阶光学非线性的波导结构。

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