Notomi M, Suzuki H, Tamamura T, Edagawa K
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, 243-0198 Japan.
Phys Rev Lett. 2004 Mar 26;92(12):123906. doi: 10.1103/PhysRevLett.92.123906.
We have fabricated photonic quasicrystal lasers with a Penrose lattice that does not possess translational symmetry but has long-range order, and observed coherent lasing action due to the optical feedback from quasiperiodicity, exhibiting a variety of 10-fold-symmetric lasing spot patterns. The lattice constant dependence of lasing frequencies and spot patterns show complicated features very different from photonic crystal/random lasers, and we have quantitatively explained them by considering their reciprocal lattice. Unique diversity of their reciprocal lattice opens up new possibilities for the form of lasers.
我们制造了具有彭罗斯晶格的光子准晶体激光器，该晶格不具有平移对称性但具有长程有序性，并且由于准周期性的光学反馈而观察到了相干激光作用，呈现出各种十重对称的激光光斑图案。激光频率和光斑图案对晶格常数的依赖性表现出与光子晶体/随机激光器非常不同的复杂特征，我们通过考虑它们的倒易晶格对其进行了定量解释。它们倒易晶格的独特多样性为激光器的形式开辟了新的可能性。
