【摘 要】
：
Optical activity (OA) is the rotation of the polarization orientation of the linearly polarized light as it travels through certain materials that are of mirror asymmetry, including gases or solutions of chiral molecules such as sugars and proteins, as we
【机 构】
：
MOEKeyLaboratoryofMaterialPhysicsandChemistryunderExtraordinaryConditions,andShaanxiKeyLaboratoryofO
【出 处】
：
PhotonicsResearch
论文部分内容阅读
Optical activity (OA) is the rotation of the polarization orientation of the linearly polarized light as it travels through certain materials that are of mirror asymmetry, including gases or solutions of chiral molecules such as sugars and proteins, as well as metamaterials. The necessary condition for achieving OA is the birefringence of two circular polarizations in material. Here, we propose a new kind of self-accelerated OA in free space, based on the intrinsic Gouy phase induced mode birefringence of two kinds of quasi-non-diffracting beams. We provide a detailed insight into this kind of self-accelerated OA by analyzing angular parameters, including angular direction, velocity, acceleration, and even the polarization transformation trajectory. As the Gouy phase exists for any wave, this kind of self-accelerated OA can be implemented in other waves beyond optics, from acoustic and elastic waves to matter waves.
其他文献
Recent studies in oncology have addressed the importance of detecting circulating tumor cell clusters because circulating tumor cell clusters might survive and metastasize more easily than single circulating tumor cells. Signals with larger peak widths de
针对光电设备传统安装标校方法操作复杂、工作难度大的缺点, 提出了一种光电设备数字标校方法, 并结合平台稳定型光电设备开展了数字标校过程的姿态耦合分析, 重点分析了设备安装水平倾角耦合关系、空间稳定姿态解算和设备方位零位解算过程, 并通过仿真计算和试验验证了该方法的可行性。试验验证结果表明：具有稳定平台的光电设备采用该数字标校方法进行安装标校和稳定控制时, 在动态条件下其目标数据精度可满足2 mrad的技术指标要求。该研究对光电设备标校及误差源分析具有工程指导意义。
光学参量过程是产生压缩光的关键环节，为了提高实验中光学参量振荡腔的稳定性，必须将激光与光学参量振荡腔进行模式匹配，并用锁定技术稳定光学参量振荡腔。理论分析了模式匹配效率对压缩度和偏频锁定技术精度的影响。经过模式匹配之后，在实验上实现了光学参量振荡腔的锁定，并对锁定后的光学参量振荡腔进行了稳定性测量。理论与实验结果表明：模式匹配效果越好，压缩光的压缩度和偏频技术的锁定精度越高；在较好的模式匹配条件下，光学参量振荡腔的腔长锁定精度为7.35 nm，稳定时间可达2 h以上，能够满足对压缩态光场的探测需要。
我们建立起一个用光栅调谐的、CO2激光器作光源的激光光声光谱装置.在C02发射波长范围内测定了乙烯、丁二烯、三氯乙烯、苯、氨、甲醇和偏二甲肼等气体的吸收谱图.
本文讨论激光等离子体低能X光辐射机理及其测试问题。
A high-speed fringe projection profilometry employing defocused binary fringe is presented to record the 3-D sign language, including gesture and mouth movement, to help people learn the sign language. It employs a number of advanced approaches, such as f
The vaporization threshold was measured under the irradiation of 1064-nm, 10-ns pulsed laser. Then we calculated the vaporization temperature based on the conservation law of energy and analyzed the vaporization time based on our established model. These