Low cost, high resolution optical coherence tomography utilizing a narrowband laser diode

Kentaro Osawa; Naoko Senda; Hiroyuki Minemura; Koichi Watanabe; Jun Hato; Daisuke Tomita

doi:10.1117/12.2074244

2 March 2015 Low cost, high resolution optical coherence tomography utilizing a narrowband laser diode

Kentaro Osawa, Naoko Senda, Hiroyuki Minemura, Koichi Watanabe, Jun Hato, Daisuke Tomita

Proceedings Volume 9312, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIX; 931237 (2015) https://doi.org/10.1117/12.2074244
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

We developed a low cost, high resolution optical coherence tomography system utilizing a narrowband laser diode (LD), which is usually used in optical pickup for compact disc. To achieve high axial resolution even with the narrow bandwidth of the LD, we have constructed a free space interferometer including a phase-diversity detection system and a high numerical aperture (NA) objective. The axial and lateral resolution in the air was about 2.6 μm and 1 μm, respectively. The tomographic imaging of biological tissue was demonstrated, and the results showed that our OCT system enabled cellular-level imaging.

Citation Download Citation

Kentaro Osawa, Naoko Senda, Hiroyuki Minemura, Koichi Watanabe, Jun Hato, and Daisuke Tomita "Low cost, high resolution optical coherence tomography utilizing a narrowband laser diode", Proc. SPIE 9312, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIX, 931237 (2 March 2015); https://doi.org/10.1117/12.2074244

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