Comparative study of the real-time optical trapping in the Rayleigh regime for continuous and femtosecond pulsed lasers
| Autor: | Debabrata Goswami, Soumendra Nath Bandyopadhyay, Tushar Gaur |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Kerr effect Scattering business.industry Physics::Optics Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Wavelength symbols.namesake Optics Optical tweezers law Femtosecond symbols Continuous wave Physics::Atomic Physics Electrical and Electronic Engineering Rayleigh scattering business |
| Zdroj: | Optics & Laser Technology. 136:106770 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2020.106770 |
| Popis: | Simulating real-time scenarios to predict optical trapping behavior for continuous wave (CW) as well as femtosecond pulsed lasers is a challenging problem. The challenging nature of the problem arises from the fact that, for a tightly focused laser, one must also include the optical Kerr effect and the thermal nonlinearity. We show here the distinct differences between CW and femtosecond pulsed laser mediated optical trapping via their impact in scattering and gradient forces in the Rayleigh regime. In our newly developed model, it will be easier to predict the stability of the trap in real optical trapping scenarios, which would provide information regarding the choice of solvents, probes, and optical parameters, such as, the type of laser, power range, wavelength, etc. |
| Databáze: | OpenAIRE |
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