A rapid, dispersion-based wavelength-stepped and wavelength-swept laser for optical coherence tomography.
Opt Express
; 22(3): 3414-24, 2014 Feb 10.
Article
em En
| MEDLINE
| ID: mdl-24663631
ABSTRACT
Optical-domain subsampling enables Fourier-domain OCT imaging at high-speeds and extended depth ranges while limiting the required acquisition bandwidth. To perform optical-domain subsampling, a wavelength-stepped rather than a wavelength-swept source is required. This preliminary study introduces a novel design for a rapid wavelength-stepped laser source that uses dispersive fibers in combination with a fast lithium-niobate modulator to achieve wavelength selection. A laser with 200 GHz wavelength-stepping and a sweep rate of 9 MHz over a 94 nm range at a center wavelength of 1550 nm is demonstrated. A reconfiguration of this source design to a continuous wavelength-swept light for conventional Fourier-domain OCT is also demonstrated.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Iluminação
/
Aumento da Imagem
/
Tomografia de Coerência Óptica
/
Lasers
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2014
Tipo de documento:
Article