摘要We report the stimulated emission from a dye doped polymer plane waveguide with TiO2 particles. This waveguide consists of a poly (methylmethacrylate) (PMMA) film containing laser dye DCM as a gain medium. The emission spectrum of the film pumped by the Nd:YAG laser is different from the amplified spontaneous emission of the dye-doped film without particles. It is shown that when the excitation intensity reaches the threshold 9.6μJ, the broad band emission spectrum narrows into multiple separate peaks with central wavelength of 608nm. The linewidth of the sharp peak is 0.5nm. According to our analyses, this phenomenon is due to the multiscattering of the disordered TiO2 particles inside the gain polymer film.
Abstract：We report the stimulated emission from a dye doped polymer plane waveguide with TiO2 particles. This waveguide consists of a poly (methylmethacrylate) (PMMA) film containing laser dye DCM as a gain medium. The emission spectrum of the film pumped by the Nd:YAG laser is different from the amplified spontaneous emission of the dye-doped film without particles. It is shown that when the excitation intensity reaches the threshold 9.6μJ, the broad band emission spectrum narrows into multiple separate peaks with central wavelength of 608nm. The linewidth of the sharp peak is 0.5nm. According to our analyses, this phenomenon is due to the multiscattering of the disordered TiO2 particles inside the gain polymer film.
WANG Qiong;YE Li-Hua;XI Jun;LU Chang-Gui;HU Guo-Hua;FANG Min;CUI Yi-Ping. Stimulated Emission from a TiO2 Particle-Dispersed Dye Polymer Plane Waveguide[J]. 中国物理快报, 2009, 26(1): 17801-017801.
WANG Qiong, YE Li-Hua, XI Jun, LU Chang-Gui, HU Guo-Hua, FANG Min, CUI Yi-Ping. Stimulated Emission from a TiO2 Particle-Dispersed Dye Polymer Plane Waveguide. Chin. Phys. Lett., 2009, 26(1): 17801-017801.
[1] Letokhov V S 1968 Sov. Phys. JETP 26 835 [2] Lawandy N W et al 1994 Nature 368 436 [3] Cao H et al 1998 Appl. Phys. Lett. 73 3656 [4] Cao H et al 1999 Phys. Rev. Lett. 82 2278 [5] Cao H et al 2000 Phys. Rev. E 61 1985 [6] Frolov S V et al 1997 Phys. Rev. Lett. 78 729 [7] Frolov S V et al 1999 Opt. Commun. 162 241 [8] Qualtieri A et al 2007 Microelectron. Engin. 84 1585 [9] Strangi G, Ferjani S, Barna V, Luca A D, Versace C,Scaramuzza N and Bartolino R 2006 Opt. Express 14 7737 [10] Liu Y J, Suna X W, Elim H I and Ji W 2006 Appl. Phys.Lett. 89 011111 [11] Zhang D K, Wang Y P and Ma D G 2007 Appl. Phys.Lett. 91 091115 [12] Song Q H, Wang L, Xiao S M, Zhou X C, Liu L Y and Xu L2005 Phys. Rev. B 72 035424 [13] Xia R D, Heliotis G and Bradley D D C 2003 Appl.Phys. Lett. 82 3599
2009, Vol. 26 
