Selective mode excitation in dye-doped DNA polyvinyl alcohol thin film | Zendy

Nithyaja Balan | Zendy; Misha Hari | Zendy; V. P. N. Nampoori | Zendy

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Selective mode excitation in dye-doped DNA polyvinyl alcohol thin film

Author(s) -

Nithyaja Balan,

Misha Hari,

V. P. N. Nampoori

Publication year - 2009

Publication title -

applied optics

Language(s) - English

Resource type - Journals

ISSN - 0003-6935

DOI - 10.1364/ao.48.003521

Subject(s) - materials science , lasing threshold , dye laser , polyvinyl alcohol , rhodamine 6g , laser , optics , amplified spontaneous emission , optoelectronics , gain switching , rhodamine , doping , full width at half maximum , wavelength , fluorescence , physics , composite material

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 approximately 0.2 nm was observed at 566 nm due to selective mode excitation.

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