Common-path optical coherence tomography using Bessel beam axicon probe for malignancy identification

Abstract

The ability to detect the malignancy inside the tissue structure non-invasively have immense potential in the clinical application. In this work, a Bessel beam axicon probe based common-path optical coherence tomography system is demonstrated for detection of malignancy inside the human tissue. This probe is employed in this system having an axicon structure which is chemically etched inside the optical fiber end. This probe generates a quality Bessel beam owning a large depth-of-field, ~700µm and small central spot size. This probe effectively identifies the malignancy in the human colon tissue hence it could be a great tool as an endoscopic probe in future for either early-stage or during surgery diagnosis.