论文部分内容阅读
被动锁模高能激光器和以负反馈为基础的动态可控谐振腔调Q
【出 处】
：
激光与光电子学进展
【发表日期】
：
1993年30期
其他文献
A set of fiber-coupled continuous wave (CW) diode lasers has been used to pump Tm,Ho:GdVO4 and generate 2.048-μm laser radiation at liquid nitrogen temperature. The optical-optical efficiencies of 25%, output power of 3.5 W, and pumping threshold of 838 m
针对地面三维激光扫描强度纠正局限于单站点云强度纠正的问题,提出基于高斯混合模型的直方图匹配方法,对多站点云强度进行纠正。该方法通过拟合距离-强度模型与入射角-强度模型,对单站点云强度值进行纠正。利用高斯混合模型拟合纠正后的单站点云强度直方图,并对直方图进行分割。通过子直方图匹配对多站点云强度进行归一化。实验结果表明,本文提出的方法不仅可以有效纠正单站点云强度值的差异,也可以改善多站点云强度值的差异
This paper presents a method to design a monolithic complete-light modulator (MCLM) that fully controls the amplitude, phase, and polarization of incident light. The MCLM is made of birefringent materials that provide different refractive indices to ortho
期刊
通过数值计算和实验研究了外部光注入和光反馈双重调制的半导体激光器混沌有效带宽和延时特征。实验结果表明，该方案可以获得较大的混沌信号带宽，与单一光反馈调制的半导体激光器相比，双重调制的半导体激光器的延时特征明显减弱。这与数值计算的结果吻合得较好，说明该方案能更好地提升基于混沌激光保密通信的保密性能。同时实验研究发现，激光器在频率负失谐区域能够获得更大的有效带宽和更小的延时特征峰，在频率正失谐区域延时特征抑制会有明显的恶化。
In order to improve the laser-induced damage threshold (LIDT) of the ZrO
应用全矢量有限元法理论分析了普通同轴双芯掺杂结构产生大负色散特性的结构特点和原理，将这种双芯结构引入到光子晶体光纤(PCF)中，并提出一种新型的可实用化的色散补偿光子晶体光纤(DCPCF)结构。该结构由掺氟棒构成较低折射率的环形外芯，而内芯采用纯石英材料以降低由于掺杂过程引入的附加损耗，空气孔采用同一尺寸以简化制作工艺，选用7.5 μm左右的大孔距来获得与普通单模光纤耦合时的模场匹配。通过改变包层中空气孔的孔距、孔径，掺氟区域的大小和掺氟量，可以对光纤的色散特性进行调节。得出在Λ=7.5 μm, d/Λ=
Multi-wavelength pulse generation using flattop optical frequency comb and arrayed waveguide grating
A scheme of multi-wavelength pulse generator using optical frequency comb and arrayed waveguide grating (AWG) is proposed and experimentally demonstrated. A flattop optical frequency comb is shaped into multiple narrowband Gaussian spectra by using an AWG
Pressure responses of halide perovskites with various compositions, dimensionalities, and morphologi
Metal halide perovskites (HPVs) have been greatly developed over the last decade, with various compositions, dimensionalities, and morphologies, leading to an emergence of high-performance photovoltaic and optoelectronic applications. Despite the tremendo
期刊