Light amplification and photo-isomerization characteristics of laser dyes and azo molecules incorporated into DNA-complex systems

Yutaka Kawabe; Kento Okoshi

doi:10.1117/12.2325290

8 October 2018 Light amplification and photo-isomerization characteristics of laser dyes and azo molecules incorporated into DNA-complex systems

Yutaka Kawabe, Kento Okoshi

Author Affiliations +

Proceedings Volume 10801, Optical Materials and Biomaterials in Security and Defence Systems Technology XV; 1080106 (2018) https://doi.org/10.1117/12.2325290
Event: SPIE Security + Defence, 2018, Berlin, Germany

Abstract

With an aim to fabricate wavelength tunable thin laser films, monolithic DNA complex layers including azo and laser dyes were prepared. Azo dyes, DO3 and DR1, were incorporated into the complex layer as guests dispersed in the host. A laser dye, Rhodamine 6G was added to the DO3 doped film by immersion method, demonstrating amplified spontaneous emission (ASE) from the single layered film under the excitation at 532nm. Threshold energy density was determined to be 2mJ/cm² which was the twice of the counterpart without DO3. It was also found that photo-response of the azos in DNA complex was very weak via experiments of photoinduced birefringence and photoinduced transparency. Instead, a blend of the complex and a PMMA based copolymer with DR1 side chain showed strong photo-isomerization response, which will be applicable to dye doping for laser action.

Conference Presentation

Citation Download Citation

Yutaka Kawabe and Kento Okoshi "Light amplification and photo-isomerization characteristics of laser dyes and azo molecules incorporated into DNA-complex systems", Proc. SPIE 10801, Optical Materials and Biomaterials in Security and Defence Systems Technology XV, 1080106 (8 October 2018); https://doi.org/10.1117/12.2325290

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