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arXiv physics/0009099physics.optics
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大相干面积薄膜光子阻带激光器

Large Coherence Area Thin-Film Photonic Stop-Band Lasers

Victor I. Kopp, Zhao-Qing Zhang, Azriel Z. Genack

摘要:

我们表明,在周期性结构中的阻带的位置随着倾斜角的增加而移动,导致对应于辐射的强角约束的宽的横向指数场分布。光束扩展遵循仅取决于光谱模式宽度的有效扩散方程。在存在增益的情况下,束截面仅受增益区域的大小限制。作为有源周期光子介质的一个例子,我们计算和测量了染料掺杂胆甾相液晶薄膜的激光辐射。

英文摘要:

We demonstrate that the shift of the stop band position with increasing oblique angle in periodic structures results in a wide transverse exponential field distribution corresponding to strong angular confinement of the radiation. The beam expansion follows an effective diffusive equation depending only upon the spectral mode width. In the presence of gain, the beam cross section is limited only by the size of the gain area. As an example of an active periodic photonic medium, we calculate and measure laser emission from a dye-doped cholesteric liquid crystal film.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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