Dergi makalesi Açık Erişim

Single transverse mode protein laser

2017    Dogru, Itir Bakis; Min, Kyungtaek; Umar, Muhammad; Jalali, Houman Bahmani; Begar, Efe; Conkar, Deniz; Karalar, Elif Nur Firat; Kim, Sunghwan; Nizamoglu, Sedat

Here, we report a single transverse mode distributed feedback (DFB) protein laser. The gain medium that is composed of enhanced green fluorescent protein in a silk fibroin matrix yields a waveguiding gain layer on a DFB resonator. The thin TiO2 layer on the quartz grating improves optical feedback due to the increased effective refractive index. The protein laser shows a single transverse mode lasing at the wavelength of 520 nm with the threshold level of 92.1 mu J/mm(2). Published by AIP Publishing.