Speaker
Description
Optical coherence tomography (OCT) is an interferometric imaging technique used to image samples such as the human eye in 2 or 3 dimensions, with micrometer resolution and millimeter penetration depths. A broad bandwidth pulsed laser is scanned across the sample, and for each laser beam position a depth profile of the sample is obtained. These depth scans are stitched together to create a 2D or 3D image of the sample. However, the axial resolution in traditional OCT systems is limited by the bandwidth of the illumination source.
Recent work in super-resolving radar has shown how to improve the depth resolution of radar systems beyond the bandwidth limitations of the source by using temporally structured radar pulses. Using these concepts from radar, we will show how a temporal pulse shaping setup for laser pulses (using a 1-dimensional spatial light modulator) can be used to create temporally structured pulses that allow us to improve the axial resolution of our imaging setup beyond the limitations imposed by the bandwidth of the laser pulses. Simulations, practical aspects with regards to temporal pulse shaping and experimental results will be shown.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |