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Full Quantitative Analysis of Arbitrary Cylindrically Polarized Pulses by Using Extended Stokes Parameters
Masato Suzuki1, Keisaku Yamane1, Kazuhiko Oka1
1Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.
Scientific Reports
|December 15, 2015
Summary
This study introduces a new method to precisely measure the polarization states of cylindrically polarized (CP) laser modes. The findings confirm high symmetry and low spectral dependence in generated CP broadband pulses.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Cylindrically polarized (CP) modes exhibit rotational symmetry in their polarization distribution around the beam axis.
- CP modes are crucial for various advanced applications, driving research into their precise characterization.
Purpose of the Study:
- To fully-quantitatively characterize spectrally-resolved polarization states of arbitrary CP broadband pulses.
- To introduce and validate the degree of polarization for spatial distribution (DOP-SD) as a metric for polarization symmetry.
Main Methods:
- Utilized extended Stokes parameters and the novel DOP-SD metric.
- Analyzed broadband pulses generated via coherent beam combining.
- Quantitatively assessed polarization states across the spectrum.
Main Results:
- Achieved the first full quantitative analysis of generated CP pulse states.
- Demonstrated high polarization symmetry (DOP-SD ≥ 0.95) and low spectral dependence.
- Validated DOP-SD's ability to quantify minor rotational symmetry degradation.
Conclusions:
- The developed quantitative characterization method offers high precision for CP modes.
- This technique is vital for applications requiring precise polarization control, such as material processing and quantum information.
- The DOP-SD metric provides a superior evaluation of polarization distribution symmetry compared to conventional parameters.
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