Radial angular filter arrays for angle-resolved scattering spectroscopy.
Opt Express
; 21(3): 2928-41, 2013 Feb 11.
Article
em En
| MEDLINE
| ID: mdl-23481751
ABSTRACT
The radial angular filter array (RAFA) consists of a series of radially-distributed micro-machined channels, where the long axes of the channels converge at a focal point. The high aspect ratio of each channel provides a means to reject photons with trajectories outside the acceptance angle of the channel. The output of the RAFA represents the angular distribution of photons emitted from the focal point. A series of RAFAs were designed, fabricated, and tested to evaluate the impact of device geometry, inter-channel cross talk, achromaticity, and channel leakage on device performance. As an application example, an RAFA was used together with an imaging spectrometer to capture angle-resolved spectra of turbid samples.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Análise Espectral
/
Filtração
/
Nefelometria e Turbidimetria
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Canadá