, 43:97 | Cite as

Sub-4-micron full-field optical coherence tomography on a budget

  • HARI NANDAKUMAREmail author


We evaluate the construction and performance of an ultra-low-cost full-field optical coherence tomography (FF-OCT) instrument, also known as an optical coherence microscope. Although the cost of construction of the instrument from off-the-shelf parts is at least ten times lower than those of commercial products, sub-4-micron axial and lateral resolutions are obtained, albeit at the cost of higher acquisition times. Standard test samples are imaged and the performance of the instrument is evaluated. The device is found to be useful in measuring length, dispersion and group refractive index as well. Suggestions for bettering performance are discussed.


Optical coherence tomography coherence imaging interferometric imaging 



The authors wish to convey their gratitude to Bhagawan Sri Sathya Sai Baba, the founder Chancellor of their University, who guided and inspired us throughout this project. The authors’ department has infrastructure funding from Department of Science and Technology, Government of India (DST) (FIST 2012-2017 SR/FST/PSI-172/2012).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest to disclose.


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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Department of PhysicsSri Sathya Sai Institute of Higher Learning, Prasanthi NilayamAnantapurIndia

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