Diffractionless propagation of light in a low-index photonic-crystal film
Diffractionless propagation of light in a low-index photonic-crystal film
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DOI：
10.1063/1.1830675
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发表时间：
2004-12
影响因子：
4
通讯作者：
R. Iliew;C. Etrich;U. Peschel;F. Lederer;M. Augustin;H. Fuchs;D. Schelle;E. Kley;S. Nolte;A. Tünnermann
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文献类型：
--
作者：
R. Iliew;C. Etrich;U. Peschel;F. Lederer;M. Augustin;H. Fuchs;D. Schelle;E. Kley;S. Nolte;A. Tünnermann
我们通过实验证明了光在氮化硅（SiNx）二维光子晶体薄膜中12个衍射长度的无衍射传播。我们发现自导光束可以传播横向电（TE）和横向磁（TM）偏振光，但频率略有不同。利用三维计算方法对低损耗窄束光子晶体结构进行了优化。实验结果与理论结果吻合良好。
We experimentally demonstrate diffractionless propagation of light over 12 diffraction lengths in a two-dimensional photonic crystal film made of silicon nitride (SiNx). We show that self-guided beams may propagate for transverse electric (TE) and transverse magnetic (TM) polarized light but at slightly different frequencies. Three-dimensional calculations are used to optimize the structure for low loss and narrow beam operation in this low-index photonic crystals. Experimental and theoretical results are in good agreement.