Volume 14, Issue 2 (Summer-Fall 2020)                   IJOP 2020, 14(2): 143-154 | Back to browse issues page

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Rafieipour P, Ghasempour Ardakani A. The Effects of External Scattering on the Improvement of Random Lasers. IJOP 2020; 14 (2) :143-154
URL: http://ijop.ir/article-1-413-en.html
The Effects of External Scattering on the Improvement of Random Lasers
Peymaneh Rafieipour1 , Abbas Ghasempour Ardakani * 1
1- Department of Physics, Shiraz University, Shiraz, Iran
Abstract:   (2849 Views)
The random laser (RL) emission characteristics can be improved by many different routes including either the material processing or optimizing the concentration of the relevant constituents. These routes can be very hard and even not practical in many cases, leaving us with the search of new schemes for the externally improvement of the random laser performance. In this paper, we suggest a simple approach for the externally enhancement of the random laser emission properties that can be applied in any designed transparent random lasing structures with single mode or multi-mode emission. This approach is based on using an adhesive tape in order to introduce an external scattering medium to the lasing structure and also return back the amplified leaking photons. For our investigated sample with nonresonant feedback, it is demonstrated that the emission intensity can be increased by a factor of 4.2 and the random laser threshold can be decreased by a factor of 1.8.
Keywords: double-sided tapes, external feedback, multiple light scattering, random lasers.
Full-Text [PDF 2161 kb]   (1771 Downloads)    
Type of Study: Research | Subject: General
Received: 2020/06/1 | Revised: 2021/01/2 | Accepted: 2021/01/14 | Published: 2021/05/20
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