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Interrogating imaginary optical force by the complex Maxwell stress tensor theorem
Jinwei Zeng1,2, Jian Wang3,4
1Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China.
Light, Science & Applications
|January 10, 2023
Summary
A new theorem for the Maxwell stress tensor relates imaginary optical force and canonical momentum. This is key for achieving perfect optical force efficiency in nanoparticles.
Area of Science:
- Optics
- Nanotechnology
- Theoretical Physics
Background:
- Optical forces are crucial for manipulating nanoparticles.
- Understanding the efficiency of optical forces requires detailed theoretical frameworks.
Purpose of the Study:
- To develop a complex Maxwell stress tensor theorem.
- To establish relationships between optical force components and momentum.
- To enable the optimization of optical force efficiency.
Main Methods:
- Formulation of the complex Maxwell stress tensor theorem.
- Analysis of the reactive strength of canonical momentum.
- Derivation of relationships for total optical force.
Main Results:
- The theorem successfully relates imaginary optical force to canonical momentum.
- Quantification of the reactive strength of canonical momentum.
- Identification of parameters essential for perfect optical force efficiency.
Conclusions:
- The developed theorem provides a fundamental link between optical forces and momentum.
- This framework is essential for designing systems with maximum optical force efficiency.
- Advances in nanoparticle manipulation and optical trapping are anticipated.
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