Coupling characteristics of surface modes in truncated two-dimensional photonic crystals

Choi, Hyoung-Gyu; Oh, Suhk Kun; Lee, Sun‐Gu; Kim, Myeong-Woo; Kim, Jae‐Eun; Park, Hae Yong; Kee, Chul‐Sik

doi:10.1063/1.2401282

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…1-7,9 Therefore, PCs and quasi-PCs could be used in various applications, including waveguiding [13][14][15][16] and PC fibers, [17][18][19][20][21] for optical supercontinuum generation, [22][23][24][25][26] nonlinear light conversion, high-harmonic generation, and active media pumping. [27][28][29][30][31][32][33][34][35][36] Recently, the surface electromagnetic modes of the PC and surface Bloch waves [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]67,68 have attracted much interest in the scientific community. The light modes localized inside the PC volume 54-61 and many-body effects inside PC structures [62][63][64][65] are also prospective topics for fundamental and applied research.…”

mentioning

confidence: 99%

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Zaytsev

Katyba

Yakovlev

et al. 2014

Journal of Applied Physics

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A novel approach for the enhancement of nonlinear optical effects inside globular photonic crystals (PCs) is proposed and systematically studied via numerical simulations. The enhanced optical harmonic generation is associated with two- and three-dimensional PC pumping with the wavelength corresponding to different PC band-gaps. The interactions between light and the PC are numerically simulated using the finite-difference time-domain technique for solving the Maxwell's equations. Both empty and infiltrated two-dimensional PC structures are considered. A significant enhancement of harmonic generation is predicted owing to the highly efficient PC pumping based on the structural light focusing effect inside the PC structure. It is shown that a highly efficient harmonic generation could be attained for both the empty and infiltrated two- and three-dimensional PCs. We are demonstrating the ability for two times enhancement of the parametric decay efficiency, one order enhancement of the second harmonic generation, and two order enhancement of the third harmonic generation in PC structures in comparison to the nonlinear generations in appropriate homogenous media. Obviously, the nonlinear processes should be allowed by the molecular symmetry. The criteria of the nonlinear process efficiency are specified and calculated as a function of pumping wavelength position towards the PC globule diameter. Obtained criterion curves exhibit oscillating characteristics, which indicates that the highly efficient generation corresponds to the various PC band-gap pumping. The highest efficiency of nonlinear conversions could be reached for PC pumping with femtosecond optical pulses; thus, the local peak intensity would be maximized. Possible applications of the observed phenomenon are also discussed.

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mentioning

confidence: 99%

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Zaytsev

Katyba

Yakovlev

et al. 2014

Journal of Applied Physics

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“…The design is based on the coupling characteristics of surface modes of two-dimensional (2D) PCs [13,14] and the magnetooptical (MO) effect [15,16]. The properties of surface localized modes are dependent on the surface configuration [17,18].…”

Section: Structure Model and Calculation Methodsmentioning

confidence: 99%

Broad self-trapped and slow light bands based on negative refraction and interference of magnetic coupled modes

Fang

Zhu

et al. 2015

J. Phys.: Condens. Matter

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We propose a new mechanism to achieve light localization and slow light. Through the study on the coupling of two magnetic surface modes, we find a special convex band that takes on a negative refraction effect. The negative refraction results in an energy flow concellation effect from two degenerated modes on the convex band. The energy flow concellation effect leads to forming of the self-trapped and slow light bands. In the self-trapped band light is localized around the source without reflection wall in the waveguide direction, whereas in the slow light band, light becomes the standing-waves and moving standing-waves at the center and the two sides of the waveguide, respectively.

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“…Recently, Rahachou and Zozoulenko proposed a novel kind of waveguiding structure, i.e., surface-modewaveguides (SMWs) in PhCs with arrays of dielectric rods [4], which can be viewed as an alternative route for highefficiency control of EM waves. Some components based on SMWs, such as the microcavity [8], sensor [9], filter [7,10,14], coupler [15], and others, exhibit new characteristics. SMWs can make the degree of freedom in the design of PhC-based devices higher and provide a new manner of guiding EM waves by straightaway integrating with other types of devices, such as mechanical and optical components [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The coupling characteristics between two neighboring parallel SMWs have been investigated by Choi et al [15]. In this paper, we first investigate the light propagation characteristics of the single SMW with different truncated surface terminations realized in a PhC slab.…”

Section: Introductionmentioning

confidence: 99%

High transmitting and coupling characteristics of light at the surface of a photonic crystal with a triangular lattice of air holes

Zhang

Liu

et al. 2012

J. Opt. Soc. Am. B

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We investigate and simulate the light transmitting and coupling characteristics of surface mode waveguides (SMWs) based on photonic crystals (PhCs) with a triangular lattice of air holes. We demonstrate that surface waves can be efficiently propagated and served as a new kind of high-efficiency single-SMW-based filter with broad bandwidth in the outer space of PhCs. We also explore the highly efficient coupling of hetero-SMWs constructed by cascading different truncated surfaces. The coupling efficiency is insensitive to the interface position.

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Coupling characteristics of surface modes in truncated two-dimensional photonic crystals

Cited by 14 publications

References 19 publications

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Broad self-trapped and slow light bands based on negative refraction and interference of magnetic coupled modes

High transmitting and coupling characteristics of light at the surface of a photonic crystal with a triangular lattice of air holes

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