Concept for Pulse Compression Device Using Structured Spatial Energy Distribution
Concept for Pulse Compression Device Using Structured Spatial Energy Distribution
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DOI：
10.1109/tmtt.2016.2518160
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发表时间：
2016-02
影响因子：
4.3
通讯作者：
V. A. Tamma;A. Figotin;F. Capolino
中科院分区：
文献类型：
--
作者：
V. A. Tamma;A. Figotin;F. Capolino
我们探索了一种新的概念，适用于在RF，微波脉冲压缩方案，并可能高达光学频率的基础上结构化的能量分布在腔支持简并带边（DBE）模式。我们表明，由于DBE模式和耦合传输线（TL）的边界条件的适当选择的高空间集中的能量提供了上级性能的结构腔相比，传统的腔的基础。我们研究了新的腔的功能：较大的加载的腔和存储的能量的品质因数相比，传统的设计，鲁棒性的腔加载的变化，在腔中心的能量馈送和提取，并通过使用等效集总电路的腔的低能量部分的腔的尺寸大幅减少。结构化能量还允许通过工程提取技术进行受控脉冲整形。所提出的概念是通用的，在等效耦合TL方面，并且可以应用于各种现实的引导结构。潜在的应用包括微波脉冲压缩器件、片上毫米波脉冲产生和脉冲激光产生。
We explore a novel concept for pulse compression scheme applicable at RF, microwave, and possibly up to optical frequencies based on structured energy distribution in cavities supporting degenerate band-edge (DBE) modes. We show the high spatial concentration of energy due to DBE modes and proper choice of boundary conditions in coupled transmission lines (TLs) provide the basis for superior performance of the structured cavity when compared to a conventional cavity. We investigate the novel cavity features: larger loaded quality factor of the cavity and stored energy compared to conventional designs, robustness to variations of cavity loading, energy feeding and extraction at the cavity center, and substantial reduction of the cavity size by use of equivalent lumped circuits for low-energy sections of the cavity. Structured energy also allows for controlled pulse shaping via engineered extraction techniques. The presented concepts are general, in terms of equivalent coupled TLs, and can be applied to a variety of realistic guiding structures. Potential applications include microwave pulse compression devices, on-chip millimeter-wave pulse generation, and pulsed laser generation.