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Evanescently coupled interface states in the gap between two Bragg reflectors

机译:两个布拉格反射器之间间隙中的逝耦合界面状态

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Interface states are known to exist at the surface of an appropriately structured Bragg reflector. If such reflectors arenpresent on the surfaces of two prisms separated by a narrow gap, the evanescently coupled interface states canninteract to produce a pair of very narrow transmission lines, the separation of which can be adjusted by varyingnthe size of the gap between the two prisms. Thus, although only a single cavity is involved, the spectral propertiesnof the system are similar to those of a dual-cavity photonic microstructure. In addition to other potential applications,nwe propose that such a structure could form the basis of an adjustable beat-frequency emitter in the terahertznregime.
机译:已知界面态存在于适当结构的布拉格反射器的表面。如果在由窄间隙隔开的两个棱镜的表面上存在这样的反射器,则e逝耦合的界面状态将不能相互作用以产生一对非常窄的传输线,可以通过改变两个棱镜之间的间隙的大小来调节它们的间隔。因此,尽管仅涉及单个腔,但是系统的光谱性质类似于双腔光子微结构的光谱性质。除了其他潜在的应用,我们建议这种结构可以构成太赫兹系统中可调节拍频发射器的基础。

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