Spectral evolution of distributed feedback laser of gold nanoparticles doped solid-state dye laser medium

Characteristics of suppressed relaxation oscillation of a distributed feedback dye laser (DFDL) based on the energy transfer process in a mixture of spherical gold nanoparticles-doped solid-state polymethylmetacrylate dissolved 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran dye was...

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Bibliographic Details
Published in:Journal of applied physics 2017-10, Vol.122 (13)
Main Authors: An, N. T. M., Lien, N. T. H., Hoang, N. D., Nghia, N. T., Hoa, D. Q.
Format: Article
Language:English
Subjects:
Applied physics
Dyes
Energy transfer
Feedback
Gold
Lasers
Nanoparticles
Numerical analysis
Relaxation oscillations
Solid state
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Summary:Characteristics of suppressed relaxation oscillation of a distributed feedback dye laser (DFDL) based on the energy transfer process in a mixture of spherical gold nanoparticles-doped solid-state polymethylmetacrylate dissolved 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran dye was theoretically and experimentally studied. Single pulse generation regime of the DFDL can be obtained with a suitable gold nanoparticle concentration and ratio of pump power over lasing threshold. Numerical analysis and experimental approach showed that in this regime, the first-pulse laser pulsewidth is rather unchanged while varying the gold nanoparticles concentration in the range of 2.0 × 109–2.0 × 1010 par cm−3. The enhancement of first pulse and the suppression of the secondary pulses by bi-direction energy transfer of spherical gold nanoparticles were experimentally observed.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4995312