研究目的
Investigating the lasing characteristics of a pyrromethene597-doped microdisk laser fabricated by the ink-jet printing method for biosensing applications.
研究成果
The microdisk laser based on FC-V-50 polymer, fabricated using the ink-jet printing method, exhibits a relatively low lasing threshold and a reasonable Q factor, making it suitable for biosensing applications. The surface roughness of the microdisk, estimated to be 6.2 nm, is a significant factor limiting the Q factor. This study represents the first demonstration of a microdisk laser based on FC-V-50 for potential biosensing applications.
研究不足
The Q factor of the microdisk is mainly limited by the surface roughness of the microdisk, which results in scattering losses. The low flatness of the FEP substrate increases the roughness of the microdisk's bottom surface, further contributing to scattering losses.
1：Experimental Design and Method Selection:
The study involved the fabrication of a microdisk laser using the ink-jet printing method with a fluorinated hyper branched polymer FC-V-50 doped with pyrromethene597. The lasing characteristics were evaluated under different excitation energy densities.
2：The lasing characteristics were evaluated under different excitation energy densities.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The microdisk was fabricated on an FEP substrate using a 10 wt% FC-V-50 solution in ethanol doped with pyrromethene597 (5 mM).
3：List of Experimental Equipment and Materials:
A piezo electric nozzle (PIJ-60ASET, Cluster Technology, Co. Ltd.), a high accuracy manipulation robot (Musashi Engineering, Inc., SHOT mini 200 Ω), an optical microscope (ECLIPSE TE2000-U, Nikon), and an atomic force microscope (VN-8000, KEYENCECORPORATION) were used.
4：Experimental Procedures and Operational Workflow:
The microdisk was fabricated by depositing the ink droplet on the FEP substrate, followed by solvent evaporation. The lasing characteristics were evaluated using a frequency doubled Nd:YAG laser for excitation and a spectrometer for signal collection.
5：Data Analysis Methods:
The lasing threshold and Q factor were estimated using Lorenzian fitting of the WGM spectrum.
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