Organic Janus Microspheres: A General Approach to All-Color Dual-Wavelength Microlasers
2019
Wei, Cong | Du, Yuxiang | Liu, Yingying | Lin, Xianqing | Zhang, Chuang | Yao, Jiannian | Zhao, Yong Sheng
We propose a general approach for obtaining dual-wavelength organic microlasers in amphiphilic Janus resonators, where hydrophilic and hydrophobic dyes can be spatially separated via polarity-driven encapsulation. Low-threshold dual-wavelength lasing was achieved in a single Janus particle with well-modulated output. This universal approach enables flexibly designing the lasing wavelength of the Janus microlasers in the full visible spectrum by systematically altering the encapsulated laser dyes. Our findings demonstrate a promising route to the photonic integration at the micro-/nanoscale that may lead to the innovation of concepts and device architectures for multifunctional optoelectronic applications.
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