Considerations on the design of diffractive optical needles
According to intensity consideration along the propagation axis, we derived mathematical conditions for a family of modulating functions able to produce needles of arbitrary length, sub-wavelength width and almost constant irradiance. These functions are derived by introducing mathematical constrain...
| Autores: | , , , |
|---|---|
| Tipo de documento: | capítulo de livro |
| Data de publicação: | 2019 |
| País: | España |
| Recursos: | Universidad Complutense de Madrid (UCM) |
| Repositório: | Docta Complutense |
| Idioma: | inglês |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/13995 |
| Acesso em linha: | https://hdl.handle.net/20.500.14352/13995 |
| Access Level: | Acceso aberto |
| Palavra-chave: | 535 Longitudinally polarized-light Depth Filter Focus Lens Spot Light needles High numerical aperture optical systems Polarization Óptica (Física) 2209.19 Óptica Física |
| Resumo: | According to intensity consideration along the propagation axis, we derived mathematical conditions for a family of modulating functions able to produce needles of arbitrary length, sub-wavelength width and almost constant irradiance. These functions are derived by introducing mathematical constrains on the on-axis power content. As a result, the modulating distribution is continuous with no jumps within or at the edge of the pupil. Numerical results suggests that the proposed approach is suitable for producing high quality needles. |
|---|