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Band edge and defect modes lasing due to confinement of helixed liquid crystals in cylindrical microcavities
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10.1063/1.2137458
/content/aip/journal/apl/87/22/10.1063/1.2137458
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/22/10.1063/1.2137458
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Lasing action from optically pumped cylindrical microcavity. Intense highly directional axial stimulated emission (at ) is observed on the background screen.

Image of FIG. 2.
FIG. 2.

Axial (a) and radial (b) lasing spectra show slightly different wavelength positions and linewidths confirming the existence of two distinct microresonant superstructure configurations.

Image of FIG. 3.
FIG. 3.

Axially (a) and radially (b) spectrally narrow laser defect modes are present within the band gap central region. mixture is used, thus the lasing action occurs at 609 and for, respectively, axially and radially recorded stimulated emissions.

Image of FIG. 4.
FIG. 4.

Temperature control of the lasing wavelength in self-organized helical mesophases confined in cylindrical microresonators. (a) A redshift of for axial and for radial stimulated emissions were recorded by increasing the temperature from 25 up to resulting in a fine tuning of the lasing action. (b) The different temperature dependence of the wavelength for the axial and radial stimulated emissions suggests the presence of two discrete DFB Bragg resonators.

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/content/aip/journal/apl/87/22/10.1063/1.2137458
2005-11-23
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Band edge and defect modes lasing due to confinement of helixed liquid crystals in cylindrical microcavities
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/22/10.1063/1.2137458
10.1063/1.2137458
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