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Electrically switchable random to photonic band-edge laser emission in chiral nematic liquid crystals
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10.1063/1.3684804
/content/aip/journal/apl/100/7/10.1063/1.3684804
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/7/10.1063/1.3684804
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Photographs of the optical texture observed on a polarizing microscope with a 20× objective for the dye-doped sample when subjected to different electric field conditions. (a) 0 V/μm, (b) 13 V/μm, f = 10 Hz, (c) 13 V/μm, 100 Hz, (d) 13 V/μm, 500 Hz, (e) 13 V/μm, 1 kHz, and (f) 13 V/μm, 5 kHz.

Image of FIG. 2.
FIG. 2.

(Color online) Normalized emission from the dye-doped sample for different electric field conditions when optically excited at λ = 532 nm. (a) 13 V/μm, 10 Hz, (b) 13 V/μm, 560 Hz, and (c) 13 V/μm, 5 kHz.

Image of FIG. 3.
FIG. 3.

Threshold measurements for (a) band-edge laser with and without the applied electric field (13 V/μm, 5 kHz) and (b) a random laser generated using an electric field of 13 V/μm, 560 Hz. The solid line in (b) is a sigmoidal fit to the data and the inset shows the relative emission intensity as a function of the excitation energy.

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/content/aip/journal/apl/100/7/10.1063/1.3684804
2012-02-17
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrically switchable random to photonic band-edge laser emission in chiral nematic liquid crystals
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/7/10.1063/1.3684804
10.1063/1.3684804
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