Gardiner, DJ and Hands, PJW and Morris, SM and Wilkinson, TD and Coles, HJ (2011) Simple and functional photonic devices from printable liquid crystal lasers. In: UNSPECIFIED 81140M-81140M..
Full text not available from this repository.Abstract
In this paper we demonstrate laser emission from emulsion-based polymer dispersed liquid crystals. Such lasers can be easily formed on single substrates with no alignment layers. Remarkably, it is shown that there can exist two radically different laser emission profiles, namely, photonic band-edge lasing and non-resonant random lasing. The emission is controlled by simple changes in the emulsification procedure. Low mixing speeds generate larger droplets that favor photonic band edge lasing with the requisite helical alignment produced by film shrinkage. Higher mixing speeds generate small droplets, which facilitate random lasing by a non-resonant scattering feedback process. Lasing thresholds and linewidth data are presented showing the potential of controllable linewidth lasing sources. Sequential and stacked layers demonstrate the possibility of achieving complex, simultaneous multi-wavelength and "white-light" laser output from a wide variety of substrates including glass, metallic, paper and flexible plastic. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
| Item Type: | Conference or Workshop Item (UNSPECIFIED) |
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| Additional Information: | Conference code: 86817 Export Date: 4 January 2012 Source: Scopus Art. No.: 81140M CODEN: PSISD doi: 10.1117/12.893448 Language of Original Document: English Correspondence Address: Gardiner, D.J.; Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, United Kingdom; email: djg47@cam.ac.uk References: Dowling, J.P., Scalora, M., Bloemer, M.J., Bowden, C.M., The photonic band edge laser: A new approach to gain enhancement (1994) Journal of Applied Physics, 75 (4), pp. 1896-1899; Vlasov, Y.A., Luterova, K., Pelant, I., Hanerlage, B., Astratov, V.N., Enhancement of optical gain of semiconductors embedded in three-dimensional photonic crystals (1997) Applied Physics Letters, 71 (12), pp. 1616-1618; Kopp, V.I., Zhang, Z.Q., Genack, A.Z., Lasing in chiral photonic structures (2003) Progress in Quantum Electronics, 27 (6), pp. 369-416; Coles, H., Morris, S., Liquid-crystal lasers (2010) Nature Photonics, 4 (10), pp. 676-685; Kopp, V.I., Fan, B., Vithana, H.K.M., Genack, A.Z., Low-threshold lasing at the edge of a photonic stop band in cholesteric liquid crystals (1998) Optics Letters, 23 (21), pp. 1707-1709; Ford, A.D., Morris, S.M., Coles, H.J., Photonics and lasing in liquid crystals (2006) Materials Today, 9 (7-8), pp. 36-42; Morris, S.M., Hands, P.J.W., Findeisen-Tandel, S., Cole, R.H., Wilkinson, T.D., Coles, H.J., Polychromatic liquid crystal laser arrays towards display applications (2008) Optics Express, 16 (23), pp. 18827-18837; Hands, P.J.W., Morris, S.M., Wilkinson, T.D., Coles, H.J., Two-dimensional liquid crystal laser array (2008) Optics Letters, 33 (5), pp. 515-517; Wang, C.T., Lin, T.H., Multi-wavelength laser emission in dye-doped photonic liquid crystals (2008) Optics Express, 16 (22), pp. 18334-18339; Morris, S.M., Ford, A.D., Pivnenko, M.N., Coles, H.J., Electronic control of nonresonant random lasing from a dye-doped smectic A*liquid crystal scattering device (2005) Applied Physics Letters, 86 (14), p. 141103; Cao, H., Zhao, Y.G., Ho, S.T., Seelig, E.W., Wang, Q.H., Chang, R.P.H., Random Laser Action in Semiconductor Powder (1999) Physical Review Letters, 82 (2), pp. 2278-2281; Cao, H., Xu, J.Y., Ling, Y., Burin, A.L., Seeling, E.W., Liu, X., Chang, R.P.H., Random lasers with coherent feedback (2003) IEEE Journal on Selected Topics in Quantum Electronics, 9 (1), pp. 111-119; John, S., Pang, G., Theory of lasing in a multiple-scattering medium (1996) Physical Review A - Atomic, Molecular, and Optical Physics, 54 (4), pp. 3642-3652; Morris, S.M., Ford, A.D., Pivnenko, M.N., Coles, H.J., Nonresonant Random Lasing from A Dye-doped Smectic A* Scattering Device, 5741, pp. 228-238; Wiersma, D.S., Cavalieri, S., Temperature-controlled random laser action in liquid crystal infiltrated systems (2002) Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 66 (5), p. 056612; Drzaic, P.S., (1995) Liquid Crystal Dispersions, , World Scientific, Singapore; Huitema, H.E.A., Gelinck, G.H., Van Der Putten, J.B.P.H., Kuijk, K.E., Hart, C.M., Cantatore, E., De Leeuw, D.M., Active-matrix displays driven by solution processed polymeric transistors (2002) Advanced Materials, 14 (17), pp. 1201-1204; Lampert, C.M., Smart switchable glazing for solar energy and daylight control (1998) Solar Energy Materials and Solar Cells, 52 (3-4), pp. 207-221; Gardiner, D.J., Morris, S.M., Hands, P.J.W., Mowatt, C., Rutledge, R., Wilkinson, T.D., Coles, H.J., Paintable band-edge liquid crystal lasers (2011) Optics Express, 19 (3), pp. 2432-2439; Hands, P.J.W., Gardiner, D.J., Morris, S.M., Mowatt, C., Wilkinson, T.D., Coles, H.J., Band-edge and random lasing in paintable liquid crystal emulsions (2011) Applied Physics Letters, 98 (14); Mowatt, C., Morris, S.M., Song, M.H., Wilkinson, T.D., Friend, R.H., Coles, H.J., Comparison of the performance of photonic band-edge liquid crystal lasers using different dyes as the gain medium (2010) Journal of Applied Physics, 107, p. 043101; Humar, M., Musevic, I., 3D microlasers from self-assembled cholesteric liquid-crystal microdroplets (2010) Optics Express, 18 (26), pp. 26995-27003; Morris, S.M., Ford, A.D., Gillespie, C., Pivnenko, M.N., Hadeler, O., Coles, H.J., The emission characteristics of liquid-crystal lasers (2006) Journal of the Society for Information Display, 14 (6), pp. 565-573; Wiersma, D.S., The physics and applications of random lasers (2008) Nature Physics, 4, pp. 359-367; Liu, Y.J., Sun, X.W., Elim, H.I., Ji, W., Gain narrowing and random lasing from dye-doped polymerdispersed liquid crystals with nanoscale droplets (2006) Applied Physics Letters, 89, p. 011111; Gottardo, S., Cavalieri, S., Yaroshchuck, O., Wiersma, D.S., Quasi-two-dimensional diffusive random laser action (2004) Physical Review Letters, 93, p. 263901; Gottardo, S., Sapienza, R., Garcia, P.D., Blanco, A., Weirsma, D.S., Lopez, C., Resonance-driven random lasing (2008) Nature Photonics, 2 (7), pp. 429-432; Lawandy, N.M., Balachandran, R.M., Gomes, A.S.L., Sauvain, E., Laser action in strongly scattering media (1994) Nature, 368 (6470), pp. 436-438 Sponsors: The Society of Photo-Optical Instrumentation Engineers (SPIE) In this paper we demonstrate laser emission from emulsion-based polymer dispersed liquid crystals. Such lasers can be easily formed on single substrates with no alignment layers. Remarkably, it is shown that there can exist two radically different laser emission profiles, namely, photonic band-edge lasing and non-resonant random lasing. The emission is controlled by simple changes in the emulsification procedure. Low mixing speeds generate larger droplets that favor photonic band edge lasing with the requisite helical alignment produced by film shrinkage. Higher mixing speeds generate small droplets, which facilitate random lasing by a non-resonant scattering feedback process. Lasing thresholds and linewidth data are presented showing the potential of controllable linewidth lasing sources. Sequential and stacked layers demonstrate the possibility of achieving complex, simultaneous multi-wavelength and "white-light" laser output from a wide variety of substrates including glass, metallic, paper and flexible plastic. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE). |
| Uncontrolled Keywords: | laser liquid crystal photonic band-gap printable random laser Alignment layers Band edge Feedback process Film shrinkage Flexible plastics Laser emission Laser output Lasing threshold Liquid-crystal lasers Mixing speed Multiwavelength Nonresonant Photonic band edge Polymer dispersed liquid crystals printable Random lasers Random lasing Small droplets Stacked layer White light Alignment Crystals Drop formation Emulsification Functional polymers Glass lasers Lasers Liquid crystals Liquid lasers Photonic band gap Photonic devices |
| Subjects: | UNSPECIFIED |
| Divisions: | Div B > Photonics |
| Depositing User: | Cron Job |
| Date Deposited: | 04 Jan 2012 17:10 |
| Last Modified: | 20 May 2013 01:41 |
| DOI: | 10.1117/12.893448 |
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