This work is partly supported by TIT-KAIST Joint Program and JSPS Research for the Future program, 21st century COE program, and a Grant-in-Aid for Scientific Research on a Priority Area (B) (12129202) from the Ministry of Education, Science, Sports and Culture. B. Park is also supported by the q-PSI program at Hanyang University through KOSEF of the Republic of Korea and the stay of K.-C. Shin at TIT is supported by Samsung Electronics. T. M. Swager is grateful for financial support from the National Science Foundation.
Effect of Phase Retardation on Defect-Mode Lasing in Polymeric Cholesteric Liquid Crystals †
Article first published online: 19 MAY 2004
Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 16, Issue 9-10, pages 779–783, May, 2004
How to Cite
Song, M. H., Park, B., Shin, K.-C., Ohta, T., Tsunoda, Y., Hoshi, H., Takanishi, Y., Ishikawa, K., Watanabe, J., Nishimura, S., Toyooka, T., Zhu, Z., Swager, T. M. and Takezoe, H. (2004), Effect of Phase Retardation on Defect-Mode Lasing in Polymeric Cholesteric Liquid Crystals . Adv. Mater., 16: 779–783. doi: 10.1002/adma.200306360
- Issue published online: 19 MAY 2004
- Article first published online: 19 MAY 2004
- Manuscript Accepted: 25 FEB 2004
- Manuscript Received: 26 OCT 2003
- Liquid crystals, cholesteric;
- Photonic crystals
Lasing via a phase retardation defect mode is reported for the first time. The Figure shows the far-field pattern of laser emission realized by inserting an anisotropic nematic liquid crystal (LC) defect layer between polymer cholesteric LC layers. The system mimics the cuticle of Plusiotis resplendens, a beetle, using the birefringence of the anisotropic layer to achieve reflectance greater than the 50 % provided by simple cholesteric LC photonic bandgaps.