Electrostatic forward-viewing scanning probe for Doppler optical coherence tomography using a dissipative polymer catheter.
Opt Lett
; 33(7): 657-9, 2008 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-18382508
ABSTRACT
A novel flexible scanning optical probe is constructed with a finely etched optical fiber strung through a platinum coil in the lumen of a dissipative polymer. The packaged probe is 2.2 mm in diameter with a rigid length of 6mm when using a ball lens or 12 mm when scanning the fiber proximal to a gradient-index (GRIN) lens. Driven by constant high voltage (1-3 kV) at low current (< 5 microA), the probe oscillates to provide wide forward-viewing angle (13 degrees and 33 degrees with ball and GRIN lens designs, respectively) and high-frame-rate (10-140 fps) operation. Motion of the probe tip is observed with a high-speed camera and compared with theory. Optical coherence tomography (OCT) imaging with the probe is demonstrated with a wavelength-swept source laser. Images of an IR card as well as in vivo Doppler OCT images of a tadpole heart are presented. This optomechanical design offers a simple, inexpensive method to obtain a high-frame-rate forward-viewing scanning probe.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Tomografia de Coerência Óptica
/
Eletricidade Estática
/
Óptica e Fotônica
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Canadá