Wan Yuhang, Zheng Zheng, Kong Weijing, Zhao Xin, Liu Ya, Bian Yusheng, Liu Jiansheng
School of Electronic and Information Engineering, Beihang University, 37 Xueyuan Rd, Beijing 100191, China.
Opt Express. 2012 Apr 9;20(8):8998-9003. doi: 10.1364/OE.20.008998.
Goos-Hanchen effect is experimentally studied when the Bloch surface wave is excited in the forbidden band of a one-dimensional photonic band-gap structure. By tuning the refractive index of the cladding covering the truncated photonic crystal structure, either a guided or a surface mode can be excited. In the latter case, strong enhancement of the Goos-Hanchen shift induced by the Bloch-surface-wave results in sub-millimeter shifts of the reflected beam position. Such giant Goos-Hanchen shift, ~750 times of the wavelength, could enable many intriguing applications that had been less than feasible to implement before.
当在一维光子带隙结构的禁带中激发布洛赫表面波时，对古斯-汉欣效应进行了实验研究。通过调整覆盖截断光子晶体结构的包层的折射率，可以激发导模或表面模。在后一种情况下，由布洛赫表面波引起的古斯-汉欣位移的强烈增强导致反射光束位置的亚毫米级位移。这种巨大的古斯-汉欣位移，约为波长的750倍，能够实现许多以前不太可行的有趣应用。
