Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 14, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3377912
Keywords
distributed feedback lasers; DNA; dyes; holographic gratings; molecular biophysics; optical multilayers; optical polymers; photochromism; polymer films; solid lasers; superradiance; surfactants
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Funding
- Ministry of Science and Higher Education [NN 507 475237, NN 507 474537]
- Wroclaw University of Technology
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We investigate an amplified spontaneous emission phenomenon and lasing in a two-layer system: a layer of modified deoxyribonucleic acid (DNA) polymeric matrix containing dye which is superimposed on a periodic relief structure formed in photochromic polymer. The luminescent layer was prepared from DNA blended with cationic surfactant molecule cetyltrimethyl-ammonium chloride (CTMA) and a Rhodamine (Rh6G) laser dye. This layer covered a specially designed photochromic polymer layer in which a surface relief grating was inscribed by holographic method in order to form a Bragg reflector for photons. Thin film of the DNA-CTMA:Rh6G/photochromic polymer was excited with pulsed laser.
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