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Demonstration of a vectorial optical field generator with adaptive close loop control.
Jian Chen1, Lingjiang Kong2, Qiwen Zhan1
1School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
The Review of Scientific Instruments
|January 1, 2018
Summary
This study introduces an adaptive closed-loop control for a vectorial optical field generator (VOF-Gen). This system enhances polarization modulation accuracy, crucial for generating complex polarized light beams.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Metrology
Background:
- Vectorial optical fields are essential for advanced applications.
- Precise control over polarization states is challenging.
- Existing methods for generating vectorial beams often lack adaptive calibration.
Purpose of the Study:
- To demonstrate a vectorial optical field generator (VOF-Gen) with adaptive closed-loop control.
- To calibrate polarization modulation accuracy.
- To enhance the generation of complex vectorial optical beams.
Main Methods:
- Implemented adaptive closed-loop control for VOF-Gen.
- Utilized polarization ratio and retardation calibration techniques.
- Employed spatial light modulators and CCD cameras for feedback.
- Performed full Stokes parameter measurements for quantitative analysis.
Main Results:
- Achieved accurate calibration of polarization modulation.
- Demonstrated improved generation of vectorial optical beams, especially those with high ellipticity.
- Validated the effectiveness of the closed-loop control system.
Conclusions:
- The adaptive closed-loop control significantly enhances the accuracy of the VOF-Gen.
- This approach is vital for precise generation of vectorial optical beams.
- The VOF-Gen with closed-loop control offers improved performance for polarization-dependent applications.
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