Tunable DFB lasers based on DNA-surfactant-dye complexes

Toshifumi Chida; Yutaka Kawabe

doi:10.1117/12.928551

15 October 2012 Tunable DFB lasers based on DNA-surfactant-dye complexes

Toshifumi Chida, Yutaka Kawabe

Proceedings Volume 8464, Nanobiosystems: Processing, Characterization, and Applications V; 84640E (2012) https://doi.org/10.1117/12.928551
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We succeeded to observe fluorescence enhancement and tunable laser emission from spin coated films of DNAcetyltrimetylammonium (CTMA) complex doped with weakly fluorescent cyanine dyes, DiQC₂(1) and DiQC₂(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.

Citation Download Citation

Toshifumi Chida and Yutaka Kawabe "Tunable DFB lasers based on DNA-surfactant-dye complexes", Proc. SPIE 8464, Nanobiosystems: Processing, Characterization, and Applications V, 84640E (15 October 2012); https://doi.org/10.1117/12.928551

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