研究目的
Demonstrating a highly compact on-chip single-mode CdS nanowire laser using a Mach-Zehnder interferometer (MZI) structure for mode selection.
研究成果
The on-chip integration scheme demonstrated can be readily extended to realize on-chip nanolasers from the ultraviolet to near-infra-red ranges, offering new opportunities for both semiconductor nanowires and on-chip photonic devices.
研究不足
The lasing threshold of the on-chip nanowire laser is slightly higher than that of the nanowire before coupling due to the insertion loss of the MZI for mode selection.
1：Experimental Design and Method Selection:
Integration of a free-standing CdS nanowire onto a SiN photonic chip to form a hybrid MZI structure for mode selection.
2：Sample Selection and Data Sources:
CdS nanowires synthesized using a chemical vapour deposition method.
3：List of Experimental Equipment and Materials:
SiN waveguides fabricated on a SiN wafer using electron beam lithography and subsequent dry etching.
4：Experimental Procedures and Operational Workflow:
Optical excitation of the CdS nanowire using 355-nm-wavelength laser pulses and measurement of the lasing output.
5：Data Analysis Methods:
Characterization of the lasing output from the SiN waveguide via fibre-to-chip grating couplers.
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