时分干涉仪装置

IF 2 4区 物理与天体物理 Q3 OPTICS
M Fernandez-Guasti
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引用次数: 0

摘要

本文介绍了光学系统中的时分干涉仪(TDI),在该干涉仪中,波列在时间上被分成两个截然不同的部分,并在随后的阶段叠加在一起。在任何时候,光子都没有其他选择,只有一种可能的路径。设置中没有路径分叉,即没有光子可向左或向右移动的 "Y"。光子的选择(如果有的话)是在时间调制介质改变其状态的时间 t1 之前或之后到达/坍缩。在时变介质中,由于波和介质之间可以进行能量交换,波的频率也会发生改变。因此,偏离的光子在波矢量方向和频率上都会受到双重标记。条纹照相机探测器阵列可以在空间与时间干涉图中同时解析条纹图案和频率跳动。这种仪器具有时间分辨率和空间分辨率。文中介绍了几种 TDI 配置,其中两种已经实现:一种是空间-时间干涉仪,可随时观察到 "哪条路径 "标准;另一种是全时间 TDI,只存在时间干扰。还讨论了 TDI 方案的新可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Time division interferometer setups
A time division interferometer (TDI) in the optical regime is presented, where a wavetrain is temporally split into two distinct parts that are superimposed at a subsequent stage. At any one time, the photons have no alternatives, only one possible path is possible. There is no path bifurcation in the setup, i.e. no ‘Y’ where the photons can take left or right. The photons choice, if any, is to arrive/collapse before or after the time t1 when the time modulated medium changes its state. In time-varying media, as energy can be exchanged between the wave and medium, the wave frequency is modified. Thus, the diverted photons become doubly tagged, in their wave vector direction as well as their frequency. A streak camera detector array resolves both, the fringe pattern as well as the frequency beats, in a space versus time interferogram. This apparatus has temporal resolution and spatial resolution. Several TDI configurations are described, two of them are implemented: a spatio-temporal interferometer where the ‘which path’ criterion is readily observed and an all temporal TDI where only temporal interference is present. Novel possibilities of TDI schemes are discussed.
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来源期刊
CiteScore
4.50
自引率
4.80%
发文量
237
审稿时长
1.9 months
期刊介绍: Journal of Optics publishes new experimental and theoretical research across all areas of pure and applied optics, both modern and classical. Research areas are categorised as: Nanophotonics and plasmonics Metamaterials and structured photonic materials Quantum photonics Biophotonics Light-matter interactions Nonlinear and ultrafast optics Propagation, diffraction and scattering Optical communication Integrated optics Photovoltaics and energy harvesting We discourage incremental advances, purely numerical simulations without any validation, or research without a strong optics advance, e.g. computer algorithms applied to optical and imaging processes, equipment designs or material fabrication.
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