研究目的
To demonstrate a flexible, effective, and economically viable method for generating 3-D micro cavity in soft material like PDMS for optofluidic dye lasers.
研究成果
The study successfully demonstrated a simple and cost-effective method for fabricating 3D microfluidic dye lasers in PDMS using microwire-molding technique. The micro-laser showed visible emission with a threshold pump power of 4.5 mW, indicating potential for integration into lab-on-chip photonic devices.
研究不足
The emissions suffer from a lack of directionality due to the absence of mirror fabrication. Further optimization of the cavity is needed to improve performance in terms of gain, bandwidth, and output power.
1：Experimental Design and Method Selection:
The study utilized microwire-molding technique for fabricating microchannels in PDMS.
2：Sample Selection and Data Sources:
Commercial nylon wire with 140 micron diameter was used for microchannel fabrication.
3：List of Experimental Equipment and Materials:
PDMS, nylon microwire, supporting frames, clamp, Rh6G dye, ethanol, benzyl alcohol, syringe needle, micro-position stage, frequency doubled Nd:YAG laser, objective lens (10X), spectrometer (USB2000, Ocean Optics).
4：Experimental Procedures and Operational Workflow:
Micro-wire alignment, pouring and curing of PDMS, microwire withdrawing, filling the microchannel with dye solution, alignment and pumping at 532 nm wavelength, capturing emission spectra.
5：Data Analysis Methods:
Spectroscopic analysis of emission spectra and study of output power variation with pump power.
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