Nonlinear self-trapping and guiding of light at different wavelengths with sheep blood.
Opt Lett
; 46(3): 629-632, 2021 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-33528426
ABSTRACT
We demonstrate the formation of waveguides, a few centimeters long, in colloidal suspensions of sheep red blood cells for a wide range of wavelengths due to nonlinear self-trapping and self-guiding of a laser beam. The near infrared (NIR) light experiences a weaker nonlinear self-action and thus requires much higher power to obtain self-trapping as compared to visible light. To examine the waveguiding of light at different wavelengths, we utilize a pump-probe-type setting for beam coupling a pump beam at a 532 nm wavelength is used to create a waveguide first, and then a probe beam with various wavelengths is sent through the waveguide channel. Effective guidance for both visible and NIR wavelengths is observed through such otherwise highly scattering bio-soft-matter.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Dinâmica não Linear
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Eritrócitos
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Pinças Ópticas
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Luz
Limite:
Animals
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article