alexa Geometric Phase Liquid Crystal Phase Shifter: A Novel Technique For Rapid Full-field Optical Coherence Tomography
ISSN: 2155-9570

Journal of Clinical & Experimental Ophthalmology
Open Access

Like us on:
OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading Please wait..

International Conference and Expo on Optometry and Vision Science
October 20-22, 2016 Rome, Italy

Maitreyee Roy
The University of New South Wales, Australia
ScientificTracks Abstracts: J Clin Exp Ophthalmol
DOI: 10.4172/2155-9570.C1.045
Optical Coherence Tomography (OCT) is a well-established technique for biological imaging, mainly used in the field of ophthalmology for routine corneal and retinal clinical examinations. The conventional OCT system produces longitudinal images by performing an axial scan and builds a two-dimensional xz or yz images. A variant of OCT called full-field optical coherence tomography (FF-OCT) is an emerging non-invasive, label-free, interferometric technique that has the inherent ability of providing rapid en face (xy) images of the object by using a detector array (CCD or CMOS), thus avoiding the necessity for using the instrumentationally complex, lateral point scanning scheme. In most FF-OCT systems, en face OCT images are constructed by using a conventional phase-shifting technique that involves shifting of the reference beam phase with a piezoelectric translator. However, with the use of a broadband source in FF-OCT, the phase shifts of different spectral components are not the same, resulting in systematic errors for reconstruction of tomographic images. To solve the problem, an achromatic phase shifter based on the geometric phase principle has been proposed which can be realized by cyclic change of the polarization state of the light beam through rotating a wave plate or polarizer using a stepper motor. However due to the slow response of stepper motor, real-time biomedical imaging is not attainable. We present a prototype FF-OCT system based on geometric phase that incorporates fast switchable ferroelectric liquid-crystal technology. It has a fast response time and can accurately map and produce 3D images of complex biological samples.

Maitreyee Roy is a Senior Lecturer and a Deputy Director of Optics & Radiometry Laboratory at the School of Optometry and Vision Science, University of New South Wales, Australia. She was awarded her PhD in Physical Optics from School of Physics at the University of Sydney. She is an accomplished Optical Physicist with broad experience in government and academic institutions with strong R&D background particularly in optical metrology, 3D optical imaging and nano-particle metrology. One of her major contributions was to demonstrate the fundamental principle of geometric phase in optics and its achromatic nature, which has opened up new insights in to broadband interferometry with application ranging from biological systems, electronics to astronomy.


image PDF   |   image HTML
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri & Aquaculture Journals

Dr. Krish

1-702-714-7001Extn: 9040

Biochemistry Journals

Datta A

1-702-714-7001Extn: 9037

Business & Management Journals


1-702-714-7001Extn: 9042

Chemistry Journals

Gabriel Shaw

1-702-714-7001Extn: 9040

Clinical Journals

Datta A

1-702-714-7001Extn: 9037

Engineering Journals

James Franklin

1-702-714-7001Extn: 9042

Food & Nutrition Journals

Katie Wilson

1-702-714-7001Extn: 9042

General Science

Andrea Jason

1-702-714-7001Extn: 9043

Genetics & Molecular Biology Journals

Anna Melissa

1-702-714-7001Extn: 9006

Immunology & Microbiology Journals

David Gorantl

1-702-714-7001Extn: 9014

Materials Science Journals

Rachle Green

1-702-714-7001Extn: 9039

Nursing & Health Care Journals

Stephanie Skinner

1-702-714-7001Extn: 9039

Medical Journals

Nimmi Anna

1-702-714-7001Extn: 9038

Neuroscience & Psychology Journals

Nathan T

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

Ann Jose

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

1-702-714-7001Extn: 9042

© 2008- 2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version