Room-temperature dual-wavelength lasing from single-nanoribbon lateral heterostructures.
Nanoscale dual-wavelength lasers are attractive for their potential applications in highly integrated photonic devices. Here we report the growth of nanoribbon lateral heterostructures made of a CdS(x)Se(1-x) central region with epitaxial CdS lateral sides using a multistep thermal evaporation route with a moving source. Under laser excitation, the emission of these ribbons indicates sandwich-like structures along the width direction, with characteristic red emission in the center and green emission at both edges. More importantly, dual-wavelength lasing with tunable wavelengths is demonstrated at room temperature based on these single-nanoribbon heterostructures for the first time. These achievements represent a significant advance in designing nanoscale dual-wavelength lasers and have the potential to open up new and exciting opportunities for diverse applications in integrated photonics, optoelectronics, and sensing.
Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Physics and Microelectronics Science, Hunan University, Changsha, China.
Jinyou
J
Xu
Liang
L
Ma
Pengfei
P
Guo
Xiujuan
X
Zhuang
Xiaoli
X
Zhu
Wei
W
Hu
Xiangfeng
X
Duan
Anlian
A
Pan
D019187:Cadmium Compounds / Q000737:chemistry*; D007834:Lasers; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D055095:Optics and Photonics / Q000295:instrumentation; D018036:Selenium Compounds / Q000737:chemistry*; D013696:Temperature
D019187:Cadmium Compounds; D037742:Nanotubes, Carbon; D018036:Selenium Compounds; C058667:cadmium selenide