Low-Threshold Random Laser with One Mirror and Feedbacks in PMMA Nano-Composite Films

Chin. Phys. Lett.

2005, Vol. 22

Issue (10): 2568-2570 DOI:

Original Articles

Low-Threshold Random Laser with One Mirror and Feedbacks in PMMA Nano-Composite Films

SUN Xiao-Hong^1,2;TAO Xiao-Ming¹;XUE Pu¹;KWAN Kai-Cheong¹;DENG Jian-Guo¹

¹Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong ²Department of Physics, University of Science and Technology of China, Hefei 230026

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SUN Xiao-Hong, TAO Xiao-Ming, XUE Pu et al 2005 Chin. Phys. Lett. 22 2568-2570

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Abstract A low-threshold random laser with one mirror and feedback is investigated in the PMMA film containing rhodamine 590 and TiO₂ nano-particles. Incoherent and coherent laser emission is observed. Effect of particle concentration on light emission is explored, and the optimum particle concentration is obtained. Optical microscopy and scanning probe microscopy are used to investigate the film structure, and the principle of incoherent and coherent laser is analysed.

Keywords: 42.55.Zz 42.70.Jk 78.55.Kz

Published: 01 October 2005

PACS:	42.55.Zz	(Random lasers)
	42.70.Jk	(Polymers and organics)
	78.55.Kz	(Solid organic materials)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I10/02568

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	SUN Xiao-Hong
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	DENG Jian-Guo

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