TEMPORAL EVOLUTION OF THE LASER RECORDING OF GRATINGS IN DNA-CTMA-Rh610 FILMS
نویسندگان
چکیده
In this paper, the laser recording of thin diffraction gratings in deoxyribonucleic acid (DNA) – cetyltrimethyl-ammonium chloride (CTMA) surfactant doped with Rhodamine 610 (Rh610) films is experimentally investigated. The diffraction efficiency of the gratings induced in dye-doped DNA films by the interference of two Ar laser beams at 514.5 nm wavelength is monitored using a He-Ne probe beam (633 nm wavelength). Considering the efficiency experimental data, the temporal evolution of the phase change during the grating recording is modeled in the frame of the Raman-Nath diffraction theory. These results are important for applications of dye-doped DNA films in nonlinear photonics.
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