Random laser rn ZnO powder pumped by picosecond pulses

• المؤلفون الرئيسيون: Nguyen, The Binh, Pham, Van Thin, Pham, Thu Nga, Nguyen, Anh Tuan
• التنسيق: مقال
• اللغة: English
• منشور في: H. : ĐHQGHN 2017
• الموضوعات: Random laser; Resonant feedback; Monodisperse colloidal spheres; Hydrolysis
• الوصول للمادة أونلاين: http://repository.vnu.edu.vn/handle/VNU_123/56486

We report ow studies of random laser from ZnO powder at room temperature. The powder of ZnO colloidal spheres was synthesized by hydrolysis of Zinc acetate dehydrate. The random lasing around 380nm was produced from a layer of the ZnO powder pumped by the third harmonics (:SSnm) of a picosecond mode locked Nd:YAG laser (1L2143B-- Ekspla). Above a pump threshold, discrete lasing modes of random laser action with resonant feedback appeared in the emission speckum. Our experimental results show that random lasing can be produced from a layer of ZnO spherical nanoparticle powder on glass substrate.