Lasing in chiral photonic structures

Kopp, Victor I.; Zhang, Zhao-Qing; Genack, Azriel Z.

doi:10.1016/s0079-6727(03)00003-x

Cited by 230 publications

(109 citation statements)

References 54 publications

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“…and by Taheri and Palffy-Muhoray et al [26] in the visible range under picoseconds pulse excitation at 532 nm. Dye-doped cholesteric liquid crystals are known as materials for compact, low threshold, distributed feedback lasers [26,28] emitting narrow band light within the whole visible range [29].…”

Section: Lasing In Dye Doped Cholesteric Liquid Crystalmentioning

confidence: 99%

Lasing Characteristics of Dye-Doped Cholesteric Liquid Crystal

Porov¹,

Chandel²,

Manohar³

2015

Transactions on Electrical and Electronic Materials

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Cholesteric liquid crystals naturally form helical structures with the helical pitch in an optical wavelength range [7]. The dye and cholesteric liquid crystal molecules are together subjected to the electric field action, which produces a collective movement that leads to changes in molecular arrangement, notably the applied electric field direction. As a result of the applied field, the helical molecular arrangement axis is perpendicular to the electric field direction and then produces an increase in the helical structure pitch [8,9].A cholesteric liquid crystal can be considered as a one-dimensional photonic crystal with a refractive index that is regularly modulated along the helix axis because of the particular arrangement of the molecules. The result is that the propagation of light is suppressed for a particular range of wavelength [10]. Preeti Porov† and Vishal Singh Chandel Department of Physics, Integral University, Lucknow 226026, IndiaReceived January 8, 2015; Revised April 9, 2015; Accepted May 3, 2015Cholesteric liquid crystals are one dimensional photonic band-gap materials due to their birefringence and periodic structure. Dye doped cholesteric liquid crystals are self-assembling, mirror-less, low threshold laser structures that exhibit distributed feedback. In this review paper, we have presented the development in the field of lasing characteristics of dye doped cholesteric liquid crystals.

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Section: Lasing In Dye Doped Cholesteric Liquid Crystalmentioning

confidence: 99%

Lasing Characteristics of Dye-Doped Cholesteric Liquid Crystal

Porov¹,

Chandel²,

Manohar³

2015

Transactions on Electrical and Electronic Materials

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“…However, the proper understanding some of its basic features has appeared much later, when the interest in lasing in LC systems has been renovated [2][3][4][5][6][7][8][9][10][11]. The current interpretation of the effect is based on the photonic band-gap concept [2].…”

Section: Introductionmentioning

confidence: 99%

“…Because the density of photon states achieves maxima just at the spectral boundaries of the band, namely these spectral regions are treated as most favourable for appearance of the low-threshold lasing effect. The lasing inside the photonic band-gap is forbidden unless defects are introduced into CLC layers [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

General properties of lasing effect in chiral liquid crystals

Palto

Shtykov

Umansky

et al. 2006

Opto-Electronics Review

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“…3-6 , in particular, at γ = 0 T + R = 1 for all frequencies. Let us study how a locally anisotropic absorption in CLC influences on the properties of EM existing at discrete frequencies outside the stop band [15,16] Fortunately, an analytical solution can be found for thick CLC layers and a sufficiently small ∆ ensuring the condition LIm(q) << 1. In this case, ω and ∆ are determined by the conditions qL=n and the EM life-times at the case of isotropic absorption may be presented as:…”

Section: Edge Mode Influenced By Local Absorption Anisotropymentioning

confidence: 99%