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http://hdl.handle.net/1783.1/3305
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| Title: | Lasing from dye-doped photonic crystals with graded layers in dichromate gelatin emulsions |
| Authors: | Kok, Man Hin
Lu, Weixin
Lee, Jeffrey Chi Wai
Tam, Wing-Yim
Wong, George K. L.
Chan, Che-Ting |
| Keywords: | Dye lasers
Dyes
Emulsions
Finite difference time-domain analysis
Gelatin
Holographic interferometry
Laser modes
Optical pumping
Permittivity
Photonic band gap
Photonic crystals
Q-factor
Swelling |
| Issue Date: | Apr-2008 |
| Citation: | Applied physics letters, v. 92, 151108 (2008) |
| Abstract: | We report on optically pumped lasing from dye-doped, graded-spacing layer structures of dichromate gelatin emulsions fabricated using two-beam holographic interference. The graded layers exhibited deep and wide photonic band gaps. Multimode lasing with both a low threshold and a high quality factor was observed at the band edge of the photonic band gap. We modeled the emissions from the dye-doped graded layer system using a finite difference time domain technique and achieved good agreement with experimental results. |
| Rights: | Applied Physics Letters © copyright (2008) American Institute of Physics. The Journal's web site is located at http://apl.aip.org/ |
| URI: | http://hdl.handle.net/1783.1/3305 |
| Appears in Collections: | PHYS Journal/Magazine Articles
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