Thommen Quentin, Mandel Paul
Optique Nonlinéaire Théorique, Université Libre de Bruxelles, Campus Plaine CP 231, 1050 Bruxelles, Brussels, Belgium.
Opt Lett. 2006 Jun 15;31(12):1803-5. doi: 10.1364/ol.31.001803.
We show that lanthanide-doped crystals can be made left handed for a finite spectral range. The electronic transitions in the dopant ions are both dipolar electric and dipolar magnetic allowed. This enables tuning the permittivity and the permeability at the same frequency. The analysis focuses on erbium-doped crystals where left-handed properties are predicted inside an experimentally reachable domain of parameters.
我们表明，掺杂镧系元素的晶体在有限的光谱范围内可以制成左手性的。掺杂离子中的电子跃迁在电偶极和磁偶极方面都是允许的。这使得能够在相同频率下调节介电常数和磁导率。分析集中在掺铒晶体上，在实验可达到的参数范围内预测其具有左手性特性。
