Numerical Simulation of Lasing Dynamics in Choresteric Liquid Crystal Based on ADE-FDTD Method

Matsui, Tatsunosuke

doi:10.5772/24089

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…Recently, we have reported a numerical simulation of lasing dynamics in uniaxial optical anisotropic media with a 1D helix modeling CLC on the basis of the auxiliary differential equation finite-difference time-domain (ADE-FDTD) method. [18][19][20] We have successfully reproduced experimentally observed circularly polarized band-edge lasing. Moreover, we have also discussed that one can obtain threshold pumping rates by plotting emission peak intensity as a function of pumping rate; thus, the ADE-FDTD scheme can be utilized to search for a more efficient device architecture of a CLC laser with a lower lasing threshold.…”

Section: Introductionmentioning

confidence: 70%

Finite-Difference Time-Domain Analysis of Twist-Defect-Mode Lasing Dynamics in Cholesteric Photonic Liquid Crystal

Matsui

Kitaguchi

2012

Jpn. J. Appl. Phys.

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We have numerically investigated lasing dynamics from a twist defect in a cholesteric liquid crystal (CLC) by an auxiliary differential equation finite-difference time-domain (ADE-FDTD) method. As ADEs, the equation of motion of polarization described on the basis of the classical electron oscillator (Lorenz) model and the rate equation in a four-level energy structure are incorporated. A lower lasing threshold has been obtained from the twist-defect mode (TDM) than from band-edge lasing. Standing-wave-like electric fields are strongly localized only in the vicinity where a twist defect is introduced into a CLC, which works as a distributed feedback TDM laser source. The oscillation direction of a standing-wave electric field is not parallel or perpendicular to LC molecules, which is quite different from the bulk CLC case. Our results may be useful for creating more efficient TDM-based CLC lasers.

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Section: Introductionmentioning

confidence: 70%

Finite-Difference Time-Domain Analysis of Twist-Defect-Mode Lasing Dynamics in Cholesteric Photonic Liquid Crystal

Matsui

Kitaguchi

2012

Jpn. J. Appl. Phys.

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“…Cholesteric liquid crystal state is comparable to nematic state [13], having nematic layers where each layer has its director; therefore, it is known as the counterpart of the nematic phase, as is shown in Figure 2(b) [14]. Likewise, these compounds exhibit long-range orientational order owing to their molecular organization into a long axis that is parallel to the molecular plan, and the molecular axis is defined as helical.…”

Section: Fundamentals Of Liquid Crystalsmentioning

confidence: 99%

Overview of Liquid Crystal Research: Computational Advancements, Challenges, Future Prospects and Applications

Malik¹,

Iqbal²,

Shahid³

et al. 2022

Liquid Crystals

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Liquid crystal (LC) is a fascinating state of matter that combines order and mobility at multiple hierarchical levels, spanning from nanoscale to the macroscale, or from molecular to the macroscopic, and is composed of molecules and layers as thin as of a few nanometer in size. This unique combination allows such a system to adapt to a wide range of external stimuli, including temperature, magnetic field, electric field, mechanical stress, light, chemical reaction, and electrochemical response, by determining a new lowest energy configuration. Liquid crystalline nanostructures efficiently transmit and amplify information and attributes over macroscopic sizes due to their dynamic nature. The responsiveness and diversity of LCs provide enormous potential and challenges for fundamental scientific insights as well as opening the door to countless applied applications. Recent breakthroughs in nanotechnology have boosted the discipline, both in terms of theoretical simulations and the ability to fabricate nanoscale structures such as sub-wavelength gratings, nanoporous materials, and nanoparticles. Because LC materials are switchable, a new family of active plasmonic and nanophotonic devices is emerging, describing fascinating basic research processes as well as the creation of upgraded devices. This chapter discusses the fundamentals, computational advances, future prospects and challenges, as well as potential applications of LCs.

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Numerical Simulation of Lasing Dynamics in Choresteric Liquid Crystal Based on ADE-FDTD Method

Cited by 2 publications

References 25 publications

Finite-Difference Time-Domain Analysis of Twist-Defect-Mode Lasing Dynamics in Cholesteric Photonic Liquid Crystal

Finite-Difference Time-Domain Analysis of Twist-Defect-Mode Lasing Dynamics in Cholesteric Photonic Liquid Crystal

Overview of Liquid Crystal Research: Computational Advancements, Challenges, Future Prospects and Applications

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