A rapid, dispersion-based wavelength-stepped and wavelength-swept laser for optical coherence tomography
OPTICS EXPRESS, cilt.22, sa.3, ss.3414-3424, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 22 Sayı: 3
- Basım Tarihi: 2014
- Doi Numarası: 10.1364/oe.22.003414
- Dergi Adı: OPTICS EXPRESS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.3414-3424
- Dokuz Eylül Üniversitesi Adresli: Hayır
Özet
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. (C) 2014 Optical Society of America