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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 849-852 |
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Rafieipour P, Ghasempour ardakani A, Samimipour M J, Tashkourian J. Fabrication of a tunable random laser based on the solution of dye and Mn doped ZnS quantum dots. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :849-852
URL: http://opsi.ir/article-1-1961-en.html
URL: http://opsi.ir/article-1-1961-en.html
Peymaneh Rafieipour * 
1, Abbas Ghasempour ardakani1 , Mohammad Jaafar Samimipour1 , Javad Tashkourian1
1, Abbas Ghasempour ardakani1 , Mohammad Jaafar Samimipour1 , Javad Tashkourian1
1- College of Science, Shiraz University, Shiraz, Iran
Abstract: (1594 Views)
In this paper, a tunable random laser is fabricated based on the solution of rhodamine B dye and Mn doped ZnS (ZnS:Mn) quantum dots. The solution of rhodamine B dye amplifies light via stimulated emission process. ZnS:Mn quantum dots also provide the optical feedback via light multiple scattering. First, we show that the emission spectrum of the solution of dye and ZnS:Mn quantum dots is very intensive and narrow in comparison with the emission spectrum of the solution of dye alone. Then, we measure the lasing threshold for the sample composed of dye and ZnS:Mn quantum dots. In the following, we investigate the effects of the concentration of ZnS:Mn quantum dots on the emission spectrum and lasing threshold. The results show that the emitted wavelength shifts to shorter wavelengths and the lasing threshold decreases by increasing the concentration of ZnS:Mn quantum dots. This procedure can be used for tuning the random laser emission.
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