研究目的
Investigating the nonlinear optical properties of poly eosin-Y phthalate solution under irradiation with low power visible CW laser light
研究成果
The study successfully investigated the nonlinear optical properties of poly eosin-Y phthalate solution using diffraction ring patterns and Z-scan techniques. The sample showed saturation absorption and self-defocusing effect, and demonstrated potential as an optical limiter. The mechanism for the optical limiting properties is attributed to the nonlinear refractive index due to thermal effect.
研究不足
The study is limited to the nonlinear optical properties of poly eosin-Y phthalate solution under low power visible CW laser light. The effects of higher power or different wavelengths were not investigated.
1：Experimental Design and Method Selection:
The study utilized diffraction ring patterns and Z-scan methods to investigate the nonlinear optical properties of poly eosin-Y phthalate solution under low power visible CW laser light.
2：Sample Selection and Data Sources:
Poly eosin-Y phthalate solution was synthesized and its absorption coefficient was measured using a UV-visible spectrophotometer.
3：List of Experimental Equipment and Materials:
A CW SDL 050 T solid state laser device, a positive glass lens, a power meter, and a camera were used.
4：Experimental Procedures and Operational Workflow:
The laser beam was focused onto the sample cell, and the diffraction ring patterns were observed on a screen. The Z-scan technique was conducted to measure the nonlinear refractive index and absorption coefficient.
5：Data Analysis Methods:
The Fresnel-Kirchhoff diffraction integral theory was used to simulate the diffraction ring patterns, and the nonlinear refractive index and absorption coefficient were calculated using specific equations.
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