• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Efficient excitations of radially and azimuthally polarized Nd 3+:YAG ceramic microchip laser by use of subwavelength multilayer concentric gratings composed of Nb2O5/SiO2
【2h】

Efficient excitations of radially and azimuthally polarized Nd 3+:YAG ceramic microchip laser by use of subwavelength multilayer concentric gratings composed of Nb2O5/SiO2

机译：利用由Nb 2 O 5 /组成的亚波长多层同心光栅有效地激发径向和方位偏振Nd 3 + ：YAG陶瓷微芯片激光器SiO 2

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cylindrical vector beams were produced from laser diode end-pumped Nd:YAG ceramic microchip laser by use of two types of subwavelength multilayer gratings as the axisymmetric-polarization output couplers respectively. The grating mirrors are composed of high- and low-refractive-index (Nb2O5/SiO2) layers alternately while each layer is shaped into triangle and concentric corrugations. For radially polarized laser output, the beam power reached 610mW with a polarization extinction ratio ( PER) of 61: 1 and a slope efficiency of 68.2%; for azimuthally polarized laser output, the beam power reached 626mW with a PER of 58: 1 and a slope efficiency of 47.6%. In both cases, the laser beams had near-diffraction limited quality. Small differences of beam power, PER and slope efficiency between radially and azimuthally polarized laser outputs were not critical, and could be minimized by further optimized adjustment to laser cavity and the reflectances of respective grating mirrors. The results manifested, by use of the photonic crystal gratings mirrors and end-pumped microchip laser configuration, CVBs can be generated efficiently with high modal symmetry and polarization purity. (C) 2008 Optical Society of America.
机译：通过分别使用两种亚波长多层光栅作为轴对称偏振输出耦合器，从激光二极管端泵浦Nd：YAG陶瓷微芯片激光器产生圆柱矢量束。光栅镜由高和低折射率（Nb2O5 / SiO2）层交替组成，而每一层都被成形为三角形和同心波纹。对于径向偏振激光输出，光束功率达到610mW，偏振消光比（PER）为61：1，斜率效率为68.2％。对于方位偏振激光输出，光束功率达到626mW，PER为58：1，斜率效率为47.6％。在这两种情况下，激光束都具有近衍射极限质量。径向和方位偏振的激光输出之间的光束功率，PER和斜率效率之间的微小差异并不重要，可以通过进一步优化调整激光腔和各个光栅镜的反射率来将其最小化。结果表明，通过使用光子晶体光栅镜和端泵浦微芯片激光器配置，可以高效产生具有高模态对称性和偏振纯度的CVB。 （C）2008年美国眼镜学会。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号