研究目的
Investigating the nonlinear optical properties of Copper Phthalocyanine (CuPc) thin films prepared via pulsed laser deposition technique with different thicknesses.
研究成果
The study successfully demonstrated the nonlinear optical properties of CuPc thin films, including negative nonlinear refractive index and positive nonlinear absorption coefficient, indicating potential applications in optical limiting devices. The suitability of CuPc thin films as optical limiters at 632.8 nm was confirmed.
研究不足
The study is limited to the investigation of nonlinear optical properties at a single wavelength (632.8 nm) and does not explore the effects of varying laser wavelengths or intensities beyond the specified parameters.
1：Experimental Design and Method Selection:
The study employed the pulsed laser deposition (PLD) technique for preparing CuPc thin films of varying thicknesses (150, 300, and 450 nm). The nonlinear optical properties were investigated using the Z-scan technique with a He-Ne laser.
2：Sample Selection and Data Sources:
CuPc thin films were deposited on substrates cleaned prior to deposition. The optical properties were analyzed using UV-visible spectroscopy and photoluminescence measurements.
3：List of Experimental Equipment and Materials:
He-Ne laser (Meredith instrument), Nd:YAG laser for PLD, UV-visible spectrophotometer, photoluminescence spectrometer.
4：Experimental Procedures and Operational Workflow:
The PLD process was conducted in a vacuum chamber. The Z-scan measurements were performed to determine the nonlinear absorption coefficient and refractive index.
5：Data Analysis Methods:
The nonlinear absorption coefficient and refractive index were calculated from the Z-scan data using specific equations provided in the paper.
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