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A high speed OCT system developed at the CSIR National Laser Centre

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dc.contributor.author Sharma, Ameeth
dc.date.accessioned 2017-06-07T06:39:44Z
dc.date.available 2017-06-07T06:39:44Z
dc.date.issued 2016-07
dc.identifier.citation Sharma, A. 2016. A high speed OCT system developed at the CSIR National Laser Centre. 61st Annual Conference of the SA Institute of Physics, University of Cape Town en_US
dc.identifier.uri http://events.saip.org.za/contributionDisplay.py?contribId=348&sessionId=16&confId=86
dc.identifier.uri http://events.saip.org.za/conferenceDisplay.py?confId=91
dc.identifier.uri http://hdl.handle.net/10204/9122
dc.description 61st Annual Conference of the SA Institute of Physics, University of Cape Town en_US
dc.description.abstract Light based techniques continue to gain momentum in different spheres of diagnostic and therapeutic applications as a result of their non-invasive, noncontact properties. One such technique is Optical Coherence tomography (OCT). Since it was first reported by Huang in 1991[1], OCT has made significant strides in different fields from dermatology and ophthalmology to polymer characterisation and bio-metrics[2-4]. In South Africa, the technique is still emerging although it is being used for eye examinations by ophthalmologists. The type of OCT system employed can be a simple, cost effective solution or a complex, highly specific and fast system depending on the application. As part of a larger project, the CSIR National Laser Centre has designed and built a high speed OCT system that can image a large surface area (25 by 25 mm) to a depth of 11 mm (sample dependant). Resultant 3-D images (512 x 512 x 2048 pixels) are acquired in less than 3 seconds. The performance of the system compares adequately with many commercially available systems which usually image smaller areas [5-6]. The heart of the system is a 200 kHz swept laser source and two axis galvonometer based scanner. Signal acquisition is made possible through a high speed analogue-to-digital converter capable of speeds greater than 1GS/s. This paper will give an overview of the system and elaborate on the design of the data acquisition system and the initial results that have been obtained. en_US
dc.language.iso en en_US
dc.publisher South African Institute of Physics (SAIP) en_US
dc.relation.ispartofseries Worklist;18237
dc.subject Light based techniques en_US
dc.subject Optical Coherence tomography en_US
dc.subject Dermatology en_US
dc.subject Ophthalmology en_US
dc.subject Ophthalmologists en_US
dc.subject CSIR National Laser Centre en_US
dc.title A high speed OCT system developed at the CSIR National Laser Centre en_US
dc.type Conference Presentation en_US


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