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Title:
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Selective mode excitation in dye-doped DNA polyvinyl alcohol thin film |
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Author:
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Nithyaja, Balan; Misha, Hari; Nampoori, Vadakkedathu P N
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Abstract:
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A solid-state laser based on a dye-doped deoxyribonucleic acid (DNA) matrix is described. A thin solid film of DNA has been fabricated by treating with polyvinyl alcohol (PVA) and used as a host for the laser dye Rhodamine 6G. The edge emitted spectrum clearly indicated the existence of laser modes and amplified spontaneous emission. Lasing was obtained by pumping with a frequency-doubled Nd:YAG laser at 532 nm. For a pump energy of 10 mJ/pulse, an intense line with FWHM ≈0.2 nm was observed at 566 nm due to selective mode excitation. |
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URI:
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http://dyuthi.cusat.ac.in/purl/2613
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Date:
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2009-07-01 |