中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3681-3684.doi: 10.1088/1009-1963/16/12/021

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PM567-Doped solid dye lasers based on PMMA

李晓晖, 樊荣伟, 夏元钦, 刘 维, 陈德应   

  1. National Key Laboratory of Tunable Lasers, Institute of Optical-Electronics,Harbin Institute of Technology, Harbin 150001, China
  • 出版日期:2007-12-20 发布日期:2007-12-20
  • 基金资助:
    Project supported by the Program for New Century Excellent Talents in University (NCET) and Program of Excellent Team in Harbin Institute of Technology.

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)†   

  1. National Key Laboratory of Tunable Lasers, Institute of Optical-Electronics,Harbin Institute of Technology, Harbin 150001, China
  • Online:2007-12-20 Published:2007-12-20
  • Supported by:
    Project supported by the Program for New Century Excellent Talents in University (NCET) and Program of Excellent Team in Harbin Institute of Technology.

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摘要： 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.

关键词: solid dye laser, PMMA, slope efficiency, photostability

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.

Key words: solid dye laser, PMMA, slope efficiency, photostability

中图分类号:  (Design of specific laser systems)

  • 42.60.By
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)