Localized modes in orientation-disordered one-dimensional media with uniaxial scatterers
Localized modes in one-dimensional (1D) media with uniaxial scatterers that are assumed to be order in spatial location but disorder in spatial orientation of their optical axis are investigated. Based on the holistic effect model in random laser, i.e., the random laser is due to the interaction of the complex localized modes in active random media with local aperiodic quasi-structure with appropriate pump light, a physical model on this type of random media is found. Its disorder degree is defined by D=no/ne. Then, the typical transmission spectrum through the random media and the light field intensity distribution corresponding to the defect modes in photonic band-gap are calculated numerically by means of the transfer matrix method, and the condition that the localized mode appears is discussed. Results show that the medium disorder plays an important role in determining the lightwave state. The localized state appears when the medium disorder is strong enough, and a new mechanism creating random laser phenomenon is brought forward.
刘正东：Engineering Research Center for Nanotechnology, Nanchang University, Nanchang 330047
备注：This work was supported by the National Natural Science Foundation of China under Grant No.10464002 and 60768001. Y. Xie's e-mail address is firstname.lastname@example.org.
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Yingmao Xie, Zhengdong Liu, "Localized modes in orientation-disordered one-dimensional media with uniaxial scatterers," Chinese Optics Letters 6(8), 575-577 (2008)