Sun, T., Qiu, Z. R., Su, Hui Min, Zhang, X. D., Zhang, Zhao Qing, Wong, George K. L., ...
We investigated the dynamics of coherent backscattering cone and random laser in a disordered gain medium of ZnO powder. Theoretical fit to the coherent backscattering cone yields a transport mean...
Xie, Ping, Zhang, Zhao Qing, Wong, Kam-Sing
We show that very high-efficiency second- and third- harmonic conversions can be generated simultaneously in 1-D semiconductor photonic crystals that possess both X(2) and X(3) nonlinearities. This...
Efficient second harmonic generation from large band gap II-VI semiconductor photonic crystal (2005)
Yang, H., Xie, P., Chan, S. K., Zhang, Zhao Qing, Sou, Philip Iam-Keong, Wong, George K. L., ...
Dramatic enhancement of second harmonic generation (SHG) near the photonic band edge was observed in a one-dimensional ZnSe/ZnMgS semiconductor photonic crystal (PC) structure. Over two orders of...
Nondegenerate two-beam coupling in Kerr nonlinear photonic crystals (2005)
We show that the energy-transfer efficiency by nondegenerate two-beam coupling in a one-dimensional Kerr-nonlinear superlattice can be enhanced by several orders of magnitude as compared with that in...
Lateral transport in quasiperiodically ordered layered media with isotropic randomness (2002)
Chan, Man-Chung, Zhang, Zhao Qing
We investigate the lateral wave transport in quasiperiodically ordered layer media with isotropic randomness. As an example, we consider the case of the Fibonacci sequence and study the ergodic...
Engineering acoustic band gaps in phononic crystals (2001)
Zhang, Zhao Qing, Lai, Yun, Zhang, Xiangdong
In recent years, the study of acoustic and elastic waves propagation in periodic materials, known as "phononic crystals", has received increasing amount of attention. Analogous to photonic crystals,...
Statistics of amplified light in periodically correlated layered systems with randomness (1997)
Chiu, King-Chuen, Zhang, Zhao Qing
We study the statistics of reflection and transmission coefficients of light in randomly layered amplifying media that are periodic on average. We are interested in one-dimensional universal scaling...