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Chemical structure of AzoB.
Emission spectra of (a) Pyrromethene 580 (dotted line) and (b) the DCM (solid line) dye dissolved in a nematic liquid crystal (ZLI 2293) and excited by a single pulse of the SHG Nd:YAG laser.
Variations of the reflection band of a CLC cell doped with AzoB when irradiated under UV light for (a) 0, (b) 1, (c) 3, (d) 8, and (e) .
Variations of the lasing spectrum of an AzoB-doped CLC cell, irradiated under UV light for (a) 0, (b) 1, (c) 3, (d) 8, and (e) .
Variations of lasing wavelength of an AzoB-doped CLC cell (a) irradiated under UV light and (b) after lasing at .
Pumped with sufficient energy, the sample can be made to lase at both the long-wavelength and the short-wavelength edges.
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