• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Nonlinear Optics and Its Applications VIII; and Quantum Optics III >Sensitive terahertz-wave detector using a quasi-phase-matched LiNbO_3 at room temperature
【24h】

Sensitive terahertz-wave detector using a quasi-phase-matched LiNbO_3 at room temperature

机译：在室温下使用准相位匹配的LiNbO_3的灵敏太赫兹波检测器

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Sensitive terahertz (THz)-wave sensor at room temperature is crucial for most applications such as 2-dimensional realtime imaging and nonlinear phenomena in semiconductors caused by multi-photon absorption, light-induced ionization, and saturated absorption. LiNbO_3 is a promising material for frequency up- and down-conversion because of its high nonlinearity and high resistance to optical damage. In this report, we propose a slant-stripe-type periodically poled Mg doped LiNbO_3 (PPMgLN) crystal for the construction of a practical THz detector. The PPMgLN solves compromised optical design and low coupling efficiency between THz and infrared (IR) pump beam due to imperfect dichroic coupler. The effective coupling of both pump beam and THz-wave into identical interaction region of up-conversion device promotes the THz detector in practical use. The phase-matched-condition in slant-stripe-type PPMgLN was designed to offer collinear propagation of two optical waves, the pump and up-conversion signal beams, because of efficient frequency conversion. The phase-mached-condition was calculated and a slant-stripe-type PPMgLN with an angle (α) of 20° and a grating period (Λ) of 29.0 μm was used in this experiment. A minimum detectable energy of 0.3 pJ/pulse at the frequency of 1.6 THz was achieved with the pump energy of 1.8 mJ/pulse in room temperature. The dynamic range of the incident THz-wave energy of 60 dB was demonstrated. Further improving for the sensitivity using longer interaction length in a PPMgLN crystal was also investigated.
机译：室温下的太赫兹（THz）波传感器对于大多数应用至关重要，例如二维实时成像和半导体中由多光子吸收，光感应电离和饱和吸收引起的非线性现象。 LiNbO_3是一种有前途的材料，可用于频率上变频和下变频，因为它具有很高的非线性度和对光学损伤的抵抗力。在本报告中，我们提出了一种斜条纹型周期性极化掺Mg的LiNbO_3（PPMgLN）晶体，用于构建实用的THz检测器。 PPMgLN解决了不完善的光学设计，以及由于不完善的二向色耦合器而导致的THz与红外（IR）抽运光束之间的低耦合效率。泵浦光束和太赫兹波有效耦合到上转换装置的相同相互作用区域中，促进了太赫兹检测器的实际应用。斜条纹型PPMgLN的相位匹配条件被设计为由于有效的频率转换而提供了两个光波，泵浦和上转换信号束的共线传播。计算相位加工条件，并且在本实验中使用具有20°的角度（α）和29.0μm的光栅周期（Λ）的倾斜条纹型PPMgLN。在室温下，泵浦能量为1.8 mJ /脉冲时，在1.6 THz的频率下可检测到的最小能量为0.3 pJ /脉冲。入射太赫兹波能量的动态范围为60 dB。还研究了在PPMgLN晶体中使用更长的相互作用长度进一步提高灵敏度。

著录项

  • 来源
  • 会议地点 Brussels(BE)
  • 作者

    K. Nawata; T. Notake; H. Ishizuki; F. Qi; Y. Takida; S. Fan; S. Hayashi; T. Taira; H. Minamide;

  • 作者单位

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Laser Research Center for Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki, Japan, 444-8585;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

    Laser Research Center for Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki, Japan, 444-8585;

    Tera-Photonics Laboratory, RIKEN Center for Advanced Photonics, 519-1399 Aramakiaoba, Aoba, Sendai, Japan, 980-0845;

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

    Lasers; Nonlinear; Frequency conversion; Quasi-phase-matched device; Terahertz;

    机译：激光；非线性变频;准相位匹配装置；太赫兹;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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