Temperature effect on the lasing from a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals

Abstract

Cataloged from PDF version of article.Temperature dependent lasing was demonstrated in a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals (LCs) along Gamma M direction in TE polarization. A redshift in lasing peaks was observed as the temperature increased from 25 to 45 degrees C. The downward movement of photonic band of TE polarization, majorly caused by the decrease in the anisotropy of LC droplets with the increase in temperature, is responsible for the redshift in lasing peaks. (C) 2010 American Institute of Physics

Pyroelectric control of the superprism effect in a lithium niobate photonic crystal in slow light configuration

“…3 There are few reports on temperature tunable PCs, and among them only one paper concerns the tunability of a superprism. 4 A steering angle of 28°is obtained for a temperature variation of 95 K. Temperature tuning of the optical properties of PC cavities has been reported by Wild et al 5 More recently, Luo et al 6 showed temperature dependent lasing in a dye-doped 2D hexagonal polymer PC. The rest of the reported works demonstrate photonic band gap tunability.…”

Spatial angle dependent lasing from a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals

“…Both TE and TM modes existed in the lasing with similar intensities. Although the multi-peak lasing generation within H-PDLC is expected according to the previous reports of theoretical simulation [6] and experimental works [10][11][12], lasing in such a wide range has never previously been observed (previously lasing peaks were generally within a spectral range of less than 10 nm, measured at distance of about 1~2 cm away from the sample). Further moving the spectrometer far away from the sample to a distance of about 6 cm, the spatial pattern of the output laser beam is found to be separated into two spots, which are symmetric with respect to the x axis, and similar to a traditional rectangle (C) 2012 OSAtransverse mode pattern TEM 10 generated from a laser cavity with rectangle symmetry.…”

“…For dye-doped photonic crystal, the photonic crystal structure formed by H-PDLC acts as an optical cavity, while the doped dye molecules act as the laser gain medium. The electrically tunable and temperature dependent characteristics of lasing from dye-doped 2D H-PDLC PCs are also investigated [11,12]. However, to our knowledge, the angle dependent lasing from a 2D H-PDLC PC has never been reported.…”

Lasing properties from dye-doped holographic polymer dispersed liquid crystal confined in two-dimensional cylindrical geometry

“…Therefore, H-PDLC devices can provide not only highly integratable capability with variety of geometric configurations, but also excellent stability compared to the completely fluidic LC based devices. Until now, tunable lasing properties from H-PDLC gratings in planar cells have been investigated extensively, such as electrical [6], thermal [24,25], and optical [26] tunable methods. As aforementioned the flexibility of H-PDLC, of interest is what's the lasing properties when the H-PDLC grating structures are prepared in a cylindrical geometry, such as photonic crystal fiber, micro capillary etc..…”