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首页> 外文会议>Photonics, devices, and systems V >Local laser-induced crystallization of lanthanum boron germanate glass near LaBGeO_5 composition
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Local laser-induced crystallization of lanthanum boron germanate glass near LaBGeO_5 composition

机译：LaBGeO_5成分附近的局部激光诱导锗酸镧玻璃的结晶

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摘要

Local crystallization of glasses induced by laser irradiation is an efficient technique of fabricating regular structures (arrays of dots, lines, gratings) which can be used as waveguides and other elements in the novel glass-based devices of integrated optics and photonics. One of the most important cases is local laser-induced crystallization of nonlinear optical crystals which can form a base for integrated active elements for optical frequency conversion or electrooptical modulation. We report a comparative study on laser-induced crystallization of lanthanum borogermanate glasses with different additives using different types of lasers. A stillwellite-like crystalline LaBGeO_5 phase possessing ferroelectric and nonlinear optical properties or its solid solutions with partial substitution of La by Nd or Sm depending on the additive are shown to precipitate as well-formed crystals a few microns in size near the glass surface under radiation of the continuous wave Nd:YAG laser (1064 nm), the continuous wave copper vapor laser (510,6 nm and 578,2 nm). To enhance optical absorption of the basic glass we added Sm_2O_3 oxide for irradiation at 1064 nm and Nd_2O_3 for irradiation at 510,6 nm and 578,2 nm whereas pure glass was subjected to KrF laser irradiation due to high native absorption at 248 nm. A copper vapor laser which almost has not been applied to this technique before is shown to be an effective tool for laser-induced crystallization providing short times of crystal growth and high speed of laser writing.
机译：由激光辐照引起的玻璃的局部结晶是制造规则结构（点，线，光栅的阵列）的有效技术，该结构可以用作集成光学和光子学的新型玻璃基器件中的波导和其他元件。最重要的情况之一是非线性光学晶体的局部激光诱导结晶，该晶体可以形成集成有源元件的基础，以集成有源元件进行光频率转换或电光调制。我们报告了使用不同类型的激光与不同添加剂对硼酸锗镧玻璃进行激光诱导结晶的比较研究。具有铁电和非线性光学性质的似铁石状晶体LaBGeO_5相，或者其固溶体（取决于添加剂）被Nd或Sm部分取代La的固溶体，在辐射下会在玻璃表面附近沉淀成几微米大小的形态良好的晶体连续波Nd：YAG激光器（1064 nm），连续波铜蒸气激光器（510.6 nm和578.2 nm）为了增强基本玻璃的光吸收，我们添加了Sm_2O_3氧化物用于1064 nm的辐照，以及Nd_2O_3氧化物用于510.6 nm和578.2 nm的辐照，而纯玻璃由于在248 nm处的高自然吸收而受到KrF激光辐照。铜蒸气激光几乎没有被应用到该技术上，它被证明是激光诱导结晶的有效工具，提供了短时间的晶体生长和高速的激光写入。

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  • 来源
    《Photonics, devices, and systems V》|2011年|p.83061A.1-83061A.7|共7页
  • 会议地点 Prague(CS)
  • 作者

    S.V. Lotarev; T.O. Gelmanova; Yu.S. Priseko; A. Paleari; V.N. Sigaev;

  • 作者单位

    International Laboratory of Functional Glass-Based Materials, D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq. 9,125047 Moscow, Russia;

    International Laboratory of Functional Glass-Based Materials, D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq. 9,125047 Moscow, Russia;

    Research and Production Enterprise "VELIT", Zavodskaya ul. 2,Istra-2, Moscow region,143500 Russia;

    International Laboratory of Functional Glass-Based Materials, D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq. 9,125047 Moscow, Russia ,Department of Materials Science, University of Milano-Bicocca, Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), Via R. Cozzi 53,I-20125 Milano, Italy;

    International Laboratory of Functional Glass-Based Materials, D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq. 9,125047 Moscow, Russia;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程光学;
  • 关键词

    laser-induced crystallization; nonlinear optical crystal; LaBGeO_5; stillwellite; optical transmission; optical microscopy;

    机译：激光诱导结晶；非线性光学晶体LaBGeO_5;钙钛矿光传输光学显微镜;

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