科研之友
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摘要
When a three-level system is coherently driven by a strong modified standing wave, photonic band gaps are viable to realize. Theoretically detailed calculations, for Pr 3+ -doped yttrium orthosilicate crystal with inhomogeneously broadening, further show that the gap structure can be dynamically controlled and optimized by modulating the Rabi frequency, the spatial periodicity of the standing wave, the reflectivity of mirror, and the angle of incidence. This adjustable photonic band gap determined by the external pump control parameters in a doped solid crystal should hold more potential for applications than that in typical photonic crystals which are determined once for all by the way the material periodic structure is grown.
- 出版日期2006
