VCSEL-based swept source for low-cost optical coherence tomography

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486857.do
DOI
10.1364/BOE.8.001110
Title
VCSEL-based swept source for low-cost optical coherence tomography
Description
This research was supported by the Basic Science Research Programthrough the National Research Foundation of Korea(NRF-2014R1A1A1006183).
abstract
We present a novel wavelength-swept laser source for optical coherence tomography (OCT) which is based on the conventional laser diode technology of the vertical-cavity surface-emitting laser (VCSEL). In our self-heating sweep VCSEL (SS-VCSEL), a VCSEL device is simply driven by ramped pulses of currents in direct intensity modulation. The intrinsic property of VCSEL produces a frequency-swept output through the self-heating effect. By the injected current, the temperature of the active region is gradually increased in this effect. Consequently, it changes the wavelength of the laser output by itself. In this study, various characteristics of our SS-VCSEL were experimentally investigated for low-cost instrumentation of a swept source OCT system. A low-cost SS-VCSEL-based OCT system was demonstrated in this research that provided an axial resolution of 135 mu m in air, sensitivity of -91 dB and a maximum imaging range longer than 10 cm when our source was operated at a sweep repetition rate of 5 kHz with an output power of 0.41 mW. Based on the experimental observations, we believe that our SS-VCSEL swept source can be an economic alternative in some of low-cost or long-range applications of OCT. (C) 2017 Optical Society of America
provenance
Made available in Cube on 2018-09-28T16:18:46Z (GMT). No. of bitstreams: 0
language
English
author
Moon, Sucbei
Choi, Eun Seo
accessioned
2018-09-28T16:18:46Z
available
2018-09-28T16:18:46Z
issued
2017
citation
BIOMEDICAL OPTICS EXPRESS(8): 2
issn
2156-7085
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486857.do
Funder
미래창조과학부
Funding Program
개인연구지원
Project ID
1711037251
Jurisdiction
Rep.of Korea
Project Name
Hybrid Fingerprint Scanner based on Ultra-thin Optical Coherence Tomography Probe Head
rights
openAccess
type
article


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