研究目的
Investigating the dynamic regulation of single-mode lasing in ZnO microcavity by piezoelectric effect.
研究成果
The study successfully demonstrated the dynamic regulation of single-mode lasing in ZnO microcavity by piezoelectric effect, opening up new avenues for optical mode-phase modulation, high-sensitive optical switches, and color-perceived optical sensing.
研究不足
The study is limited by the technical constraints of the experimental setup and the potential for optimization in the encapsulation process and strain application method.
1：Experimental Design and Method Selection:
The study utilized an epoxy-encapsulated ZnO microresonator fixed on a flexible PET substrate to achieve single-mode lasing through the piezoresistive and piezoelectric polarization synergistic effect.
2：Sample Selection and Data Sources:
Individual ZnO microrods with different dimensions were synthesized by a vapor-phase transport method and encapsulated by epoxy resin.
3：List of Experimental Equipment and Materials:
A Nd:YAG laser coupled with a confocal l-PL system was used as an excitation source. The light emission was detected and analyzed by a CCD detector and an optical multi-channel analyzer.
4：Experimental Procedures and Operational Workflow:
The applied strain was manifested by the deformation of the flexible PET substrate manipulated by a manual three-dimensional displacement stage.
5：Data Analysis Methods:
The relationship between the applied strain and the tunable refractive index was analyzed and discussed systematically.
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