We succeeded to observe fluorescence enhancement and tunable laser emission from spin coated films of DNAcetyltrimetylammonium
(CTMA) complex doped with weakly fluorescent cyanine dyes, DiQC<sub>2</sub>(1) and DiQC<sub>2</sub>(3) which
were optically excited by interfering two beams forming a induced dynamic grating. Wavelength tuning of the laser
emission was achieved by varying the angle between the pumping beams determining the grating period on the film.
Degradation processes of the dye-doped films of DNA complex and PMMA were investigated and compared by
monitoring absorption spectra after continuous excitation with a pulsed laser. Roles of DNA for fluorescence
enhancement and improved durability were confirmed for these cyanine dyes.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Toshifumi Chida and Yutaka Kawabe
"Tunable DFB dye lasers based on DNA-surfactant complexes", Proc. SPIE 8464, Nanobiosystems: Processing, Characterization, and Applications V, 84640E (December 6, 2012); doi:10.1117/12.928551; http://dx.doi.org/10.1117/12.928551