Damage to the planar texture of absorbing cholesteric liquid crystals by pulsed laser radiation

Ilchishin, Igor P.; Tikhonov, E. A.; Shpak, M. T.

doi:10.1070/qe1987v017n12abeh011289

Cited by 9 publications

(3 citation statements)

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“…The transmission dynamics of the planar texture of CLC on a CE mixture was studied in [8]. For the pumping above several MW/ɫm 2 , the probe beam power decreased after a time interval of ~100 ns.…”

Section: Energy Efficiencymentioning

confidence: 99%

“…In connection with the search for ways to the optimization of a threshold and the output power of the lasing on CLCs with dyes, we studied the dynamics of variations in their planar structure for separate pumping pulses with the purpose to determine the limiting modes of pumping without any fracture of a texture [8]. The nature of the appearance of a ring structure in the spatial pattern of the emission of a CLC-laser was studied in [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dye-doped cholesteric lasers: Distributed feedback and photonic bandgap lasing models

Ilchishin

Tikhonov

2015

Progress in Quantum Electronics

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Section: Energy Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dye-doped cholesteric lasers: Distributed feedback and photonic bandgap lasing models

Ilchishin

Tikhonov

2015

Progress in Quantum Electronics

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“…A number of significant results have been obtained using new CLC materials [7][8][9]. In particular, they concern the extension of the interval of generation frequency tuning [10], the methods of generation frequency tuning [11,12], the ways to enhance the energy yield of a CLC laser [13][14][15], and the degradation dynamics of its active element [16].…”

Section: Introductionmentioning

confidence: 99%

How Laser Physics Brought Optics to the World of Photonic Crystals

Ilchyshyn

Tikhonov

2020

Ukr. J. Phys.

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A brief review of authors’ research is presented. An emphasis is made on the photon localization in the helical structure of a chiral liquid crystal (CLC), which was first experimentally registered by the authors. An analysis of the spectral and lasing characteristics of distributed feedback (DF) lasers based on natural CLCs (type 1) and on chiral nematics (type 2) led to a conclusion that the model of photonic crystal is suitable to describe the lasing mechanism in type-2 CLC lasers, but not in type-1 ones. This conclusion is evidenced by the absence of lasing bands at the opposite edges of the selective reflection (SR) band; at the same time, the lasing line is located at its center. It is shown that if the SR band of the CLC overlaps the maximum of the laser dye fluorescence band, the lasing line coincides with the SR band center to an error of ±1 nm. If the layer thickness in the CLC lasers of both types does not exceed 50 мm, when a high-quality planar texture is retained and a low generation threshold is achieved, a significant difference between their optical characteristics takes place. Namely, the SR spectrum for a type-1 CLC laser is approximately described by a Lorentzian profile, whereas the contour of the SR spectrum for a type-2 CLC laser has a profile characteristic of the transmittance through multilayer dielectric mirrors. The origins of the differences between the optical and laser characteristics of the CLC lasers of both types have been analyzed from the viewpoint of two lasing models: DF and photonic-crystal ones.

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Resonanсe nonlinear optical properties of dye-doped liquid crystals under pulse excitation: Insight into early experiments

Tikhonov

Ilchishin

2018

Journal of Molecular Liquids

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Damage to the planar texture of absorbing cholesteric liquid crystals by pulsed laser radiation

Cited by 9 publications

References 0 publications

Dye-doped cholesteric lasers: Distributed feedback and photonic bandgap lasing models

Dye-doped cholesteric lasers: Distributed feedback and photonic bandgap lasing models

How Laser Physics Brought Optics to the World of Photonic Crystals

Resonanсe nonlinear optical properties of dye-doped liquid crystals under pulse excitation: Insight into early experiments

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