Optimization of a Rhodamine 6G-doped PMMA thin-slab laser
Poly(methyl methacrylate) (PMMA) and Rhodamine 6G (Rh6G) were first dissolved in chloroform, then dried and milled into powdery preform for fabrication into rectangular thin slabs (< 1 mm) by a hot-press molding technique. Aluminum was coated on two surfaces of dye-doped PMMA thin slabs as reflec...
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ELSEVIER SCIENCE BV
2007
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| Online Access: | http://shdl.mmu.edu.my/3074/ |
| _version_ | 1848790226881740800 |
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| author | Tou, T.Y. Yap, S.S. Chin, O.H. Ng, S.W. |
| author_facet | Tou, T.Y. Yap, S.S. Chin, O.H. Ng, S.W. |
| author_sort | Tou, T.Y. |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | Poly(methyl methacrylate) (PMMA) and Rhodamine 6G (Rh6G) were first dissolved in chloroform, then dried and milled into powdery preform for fabrication into rectangular thin slabs (< 1 mm) by a hot-press molding technique. Aluminum was coated on two surfaces of dye-doped PMMA thin slabs as reflectors. Conversion efficiency, peak lasing wavelength and spectral bandwidth of dye laser emissions from these slabs, which were transversely pumped by a nitrogen laser, were measured as a function of the dye concentration, slab thickness, and aluminum coatings. Re-absorption of back-scattered fluorescence due to aluminum coating on the opposite surface increased the conversion efficiency from 10.5% to 15% while that on the back surface further increased it to 17.5%. The operation lifetime of 3000 pulses at 50% reduction in the dye laser output, as compared to earlier work on thicker slabs (5 mm), suggested that re-absorption of fluorescence did not cause significant photo-degradation of Rh6G. As the dye laser action was confirmed in a thin slab, the operation lifetime may represent a more realistic photostability of Rh6G in PMMA matrix. (c) 2006 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T18:09:15Z |
| format | Article |
| id | mmu-3074 |
| institution | Multimedia University |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:09:15Z |
| publishDate | 2007 |
| publisher | ELSEVIER SCIENCE BV |
| recordtype | eprints |
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| spelling | mmu-30742011-09-29T03:44:07Z http://shdl.mmu.edu.my/3074/ Optimization of a Rhodamine 6G-doped PMMA thin-slab laser Tou, T.Y. Yap, S.S. Chin, O.H. Ng, S.W. T Technology (General) QA75.5-76.95 Electronic computers. Computer science Poly(methyl methacrylate) (PMMA) and Rhodamine 6G (Rh6G) were first dissolved in chloroform, then dried and milled into powdery preform for fabrication into rectangular thin slabs (< 1 mm) by a hot-press molding technique. Aluminum was coated on two surfaces of dye-doped PMMA thin slabs as reflectors. Conversion efficiency, peak lasing wavelength and spectral bandwidth of dye laser emissions from these slabs, which were transversely pumped by a nitrogen laser, were measured as a function of the dye concentration, slab thickness, and aluminum coatings. Re-absorption of back-scattered fluorescence due to aluminum coating on the opposite surface increased the conversion efficiency from 10.5% to 15% while that on the back surface further increased it to 17.5%. The operation lifetime of 3000 pulses at 50% reduction in the dye laser output, as compared to earlier work on thicker slabs (5 mm), suggested that re-absorption of fluorescence did not cause significant photo-degradation of Rh6G. As the dye laser action was confirmed in a thin slab, the operation lifetime may represent a more realistic photostability of Rh6G in PMMA matrix. (c) 2006 Elsevier B.V. All rights reserved. ELSEVIER SCIENCE BV 2007-04 Article NonPeerReviewed Tou, T.Y. and Yap, S.S. and Chin, O.H. and Ng, S.W. (2007) Optimization of a Rhodamine 6G-doped PMMA thin-slab laser. Optical Materials, 29 (8). pp. 963-969. ISSN 09253467 http://dx.doi.org/10.1016/j.optmat.2005.11.035 doi:10.1016/j.optmat.2005.11.035 doi:10.1016/j.optmat.2005.11.035 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science Tou, T.Y. Yap, S.S. Chin, O.H. Ng, S.W. Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title | Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title_full | Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title_fullStr | Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title_full_unstemmed | Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title_short | Optimization of a Rhodamine 6G-doped PMMA thin-slab laser |
| title_sort | optimization of a rhodamine 6g-doped pmma thin-slab laser |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/3074/ http://shdl.mmu.edu.my/3074/ http://shdl.mmu.edu.my/3074/ |