研究目的
To propose laser direct writing with scanning absorbance modulation to produce free super-resolution patterns and to study four kinds of optical vortex beams as the confining beam for this purpose.
研究成果
The study concludes that the best confining beam for scanning absorbance modulation must follow three criteria: the size of the dark field should be super-resolution, the dark field should have a parallel shape to resist the smoothing effect, and the contrast of the dark field and the bright field should be sufficiently high. The 2-level, 1.5-order optical vortex beam is identified as an example that meets these criteria.
研究不足
The study is based on simulations and theoretical models, which may not fully capture all practical challenges in implementing the proposed method. The performance of scanning absorbance modulation is dependent on the properties of the photochromic material and the accuracy of the optical vortex beam generation.
1：Experimental Design and Method Selection:
The study involves simulating the performance of scanning absorbance modulation using four types of optical vortex beams as the confining beam. The methodology includes theoretical models and algorithms for calculating the intensity distribution of focused light fields and the differential model for absorbance modulation.
2：Sample Selection and Data Sources:
The study uses theoretical models and simulations rather than physical samples. Data is generated through computational methods based on the properties of photochromic materials and optical vortex beams.
3：List of Experimental Equipment and Materials:
The study mentions the use of a spatial light modulator (SLM), computer-generated hologram (CGH), and spiral phase plate (SPP) for generating optical vortex beams. The photochromic material parameters are quoted from previous research.
4：Experimental Procedures and Operational Workflow:
The workflow involves calculating the intensity distribution of focused light fields, simulating the absorbance modulation process using a differential model, and evaluating the performance of different confining beams in static and dynamic exposure scenarios.
5：Data Analysis Methods:
The analysis includes comparing the exposure dose distributions under static and dynamic exposures for different confining beams to determine the optimal beam for scanning absorbance modulation.
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