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arXiv physics/0411033physics.optics
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平面微腔发射的光学相干特性

Optical coherence properties of planar microcavity emission

R. F. Oulton, P. N. Stavrinou, G. Parry

摘要:

从第一性原理出发,导出了微腔和部分相干源的自相干函数的解析表达式。两个谐振腔LED(RCLED)的模型和实验测量之间的良好协议是显而易见的。该模型还描述了相干长度随数值孔径的变化。这可以通过微腔在过滤掉底层光源的统计波动时的角度灵敏度来解释。它进一步表明,可变的平面微腔的相干特性可以通过控制微腔和发射器的潜在的相干性设计,从而可以实现范围超过近一个数量级的相干长度。

英文摘要:

An analytical expression for the self coherence function of a microcavity and partially coherent source is derived from first principles in terms of the component self coherence functions. Excellent agreement between the model and experimental measurements of two Resonant Cavity LEDs (RCLEDs) is evident. The variation of coherence length as a function of numerical aperture is also described by the model. This is explained by a microcavity's angular sensitivity in filtering out statistical fluctuations of the underlying light source. It is further demonstrated that the variable coherence properties of planar microcavities can be designed by controlling the underlying coherences of microcavity and emitter whereby coherence lengths ranging over nearly an order of magnitude could be achieved.

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