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Chinese Physics, 2007, Vol. 16(12): 3681-3684    DOI: 10.1088/1009-1963/16/12/021
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

PM567-Doped solid dye lasers based on PMMA

Li Xiao-Hui(李晓晖), Fan Rong-Wei(樊荣伟), Xia Yuan-Qin (夏元钦), Liu Wei(刘维), and Chen De-Ying(陈德应)
National Key Laboratory of Tunable Lasers, Institute of Optical-Electronics,Harbin Institute of Technology, Harbin 150001, China
Abstract  Polymers are a kind of attractive hosts for laser dyes due to their high transparency in both pumping and lasing ranges and superior optical homogeneity. In this paper solid dye samples based on polymethyl methacrylate (PMMA) doped with different concentrations of 1, 3, 5, 7, 8 -pentamethyl-2, 6-diethylpyrromethene-BF$_{2 }$ (PM567) are prepared. The absorption, fluorescence and lasing spectra of the samples are obtained. Wide absorption and fluorescence bands are obtained and a red shift of the maxima of the lasing emission spectra is observed. With the second-harmonic generation of Q-switched Nd:YAG laser (532 nm, $\sim $20 ns) pumping the samples longitudinally, the slope efficiencies of the samples are obtained. There is an optimal dye concentration for the highest slope efficiency when the pumping energy is lower than some typical value ($\sim $250 mJ), and the highest slope efficiency 35.6% is obtained in the sample with a dye concentration of $2\times10^{ - 4}$ mol/L. Pumping the samples at a rate of 10Hz with a pulse energy as high as 200 mJ (the fluence is 0.2 J/cm$^{2})$, the output energy drops to one-half of its initial value after approximate 15500 pulses and the normalized photostability is 5.17 GJ/mol. A kind of solid dye laser which could have some applications is built.
Keywords:  solid dye laser      PMMA      slope efficiency      photostability  
Accepted manuscript online: 
PACS:  42.60.By (Design of specific laser systems)  
  42.55.Mv (Dye lasers)  
  42.60.Gd (Q-switching)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.70.Jk (Polymers and organics)  
  78.40.Me (Organic compounds and polymers)  
Fund: Project supported by the Program for New Century Excellent Talents in University (NCET) and Program of Excellent Team in Harbin Institute of Technology.

Cite this article: 

Li Xiao-Hui(李晓晖), Fan Rong-Wei(樊荣伟), Xia Yuan-Qin (夏元钦), Liu Wei(刘维), and Chen De-Ying(陈德应) PM567-Doped solid dye lasers based on PMMA 2007 Chinese Physics 16 3681

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