无序激光晶体Nd∶BaLaGa3O7的光谱研究

来源 :光学学报 | 被引量 : 0次 | 上传用户:geolin1965
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
稀土离子掺杂的无序激光晶体,具有宽的发射光谱和较高的热导率,在超短脉冲研究应用中受到广泛关注。利用提拉法生长无序激光晶体Nd∶ BaLaGa3O7,测量室温下偏振吸收谱、发射谱及荧光寿命表征其光谱性能。Nd∶BaLaGa3O7在808 nm处的吸收半峰全宽达到15 nm,4F3/2 →4I11/2发射半峰全宽为27 nm,受激发射截面为3×10-20 cm2,荧光寿命为311 μs,是优良的超短脉冲激光增益材料。实验对Nd∶BaLaGa3O7光谱性质的表征对其在激光中的应用具有重要指导意义。
其他文献
Scattering phenomena affect light propagation through any kind of medium from free space to biological tissues. Finding appropriate strategies to increase the robustness to scattering is the common requirement in developing both communication protocols an
期刊

We propose a practical scheme for end-to-end optical backpropagation in neural networks. Using saturable absorption for the nonlinear units, we find that the backward-propagating gradients required to train the network can be approximated in a surprisi

期刊
We present possible conceptual designs of a laser system for driving table-top free-electron lasers based on terahertz acceleration. After discussing the achievable performances of laser amplifiers with Yb:YAG at cryogenic and room temperature and Yb:YLF
从麦克斯韦方程组出发,结合电磁场边界条件推导出在倾斜光轴条件下的传输矩阵。利用该传输矩阵研究了光轴方向对基于六方氮化硼的光子晶体光学特性的影响。研究表明,当=0°时,此结构会在六方氮化硼Ⅱ型双曲区域出现全方位禁带。随着的不断增大,TE波和TM波在Ⅱ型双曲区域内的光子禁带逐渐错开, 对于TM波, Ⅰ型双曲区域开始产生禁带,且朝着低频方向移动;Ⅱ型双曲区域内的禁带不断变窄,并往高频方向移动。利用这些特性,可实现偏振光分离和禁带加宽。
A new calibration method of detectors can be realized by using correlated photons generated in spontaneous parametric down-conversion (SPDC) effect of nonlinear crystal. An absolute calibration system of detector quantum efficiency is performed. And its p
We report efficient generation of 671 nm red light based on quasi-phase-matched second harmonic generation of 1342 nm in LiNbO3 waveguides. The design method and fabrication process of the high-quality annealed proton-exchanged periodically pol
为研究不同亮度下iPad和iPhone显示颜色的均匀性及色域覆盖率的变化,以NEC显示器为参考,在这三类显示设备上全屏显示测量色块,计算不同亮度下指定位置与中心点之间的色差值;计算各显示设备不同亮度下色域覆盖率(Gp),分析亮度对Gp的影响。实验结果表明:三个显示设备的颜色显示均匀性都较好,ΔEab
本文对CO2波导激光器的可调谐性能进行了理论分析和实验研究.结果表明.只有在一定的条件下才能实现单一支线调谐.调谐宽度是器件的光学增益、总损耗、充气气压和配比及放电电流等参量的函数.
期刊
In this paper, a transmissive terahertz (THz) quarter wave plate (QWP) has been proposed to realize the linear- to-circular polarization conversion in terahertz range. This quarter wave plate is composed of two dielectric layers and one metallic layer wit
期刊