Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Evaluation of a swept-laser optical coherence tomography light source based on a novel quantum-dot based semiconductor optical amplifier

Not Accessible

Your library or personal account may give you access

Abstract

We describe a simple swept-laser design that characterizes the emission bandwidth, linewidth, spectral shape and output noise. A short cavity Littmann configuration is used in which the semiconductor optical amplifier (SOA) lasing wavelength is tuned by a galvanometer with an 830 grooves per mm diffraction grating. A 3dB coupler extracts light from the cavity formed by the grating and end-mirror and the optical output uses to illuminate a balanced swept source optical coherence tomography (SS-OCT) interferometer incorporating a circulator, 3dB coupler, dispersion compensator and balanced detector. The SOA (SOA-1200-70-PM-20sB, Innolume GmbH) uses a novel III-V semiconductor quantum-dot gain medium. ASE is emitted between 1150nm and 1300nm at a drive current of 700mA. When used in the Littmann cavity laser a coherence length of about 10mm is produced, which is tunable over 60nm. The peak output power is 12mW. The swept-laser has been incorporated into a fiber-based SS-OCT system and used to image biological tissues. Axial resolution in air is 12 microns. Images of human palmar skin in-vivo are demonstrated, showing good resolution and contrast, with the stratum corneum, epidermis, rete ridges and epidermal-dermal junction visualized.

© 2011 OSA/SPIE

PDF Article
More Like This
InAs Quantum Dot Broadband Swept-Source Laser for Optical Coherent Tomography

Ruizhe Yao, Nicholas Weirs, Chi-Sen Lee, Zihao Wang, Stefan Preble, and Wei Guo
FW5C.4 Frontiers in Optics (FiO) 2016

Fourier Domain Optical Coherence Tomography for Ophthalmology using 800-nm Wavelength-Swept Laser: Preliminary Study

Sang-Won Lee, Hyun-Woo Song, Jae Du Cho, Chang-Seok Kim, Bong-Kyu Kim, Moon-Youn Jung, and Seung-Hwan Kim
C554 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2011

Novel S+C+L Broadband Source Based on Semiconductor Optical Amplifiers and Erbium-Doped Fiber for Optical Coherence Tomography

D. Beitel, L. Carrion, K. L. Lee, A. Jain, L. R. Chen, R. Maciejko, and A. Nirmalathas
CFL5 Conference on Lasers and Electro-Optics (CLEO:S&I) 2007

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved