[26p-E204-1~13] 3.4 生体・医用光学

▲ [26p-E204-12] Speckle reduction by spectral compounding average in SD-OCT using tunable quasi-supercontinuum source

〇Ying Chen¹、Norihiko Nishizawa¹ (1.Nagoya Univ.)

キーワード：Optical coherence tomography, Speckle reduction, Quasi-supercontinuum source

Optical coherence tomography (OCT) suffers speckle noises, which arise from superposition of multiple backscattering with random phases, degrading the image contrast. The quasi-supercontinuum (SC) source has tunable spectrum with different central wavelength, bandwidth, and spectral shape. It is expected that this light source is useful to achieve speckle decorrelation on OCT imaging. In this work, we demonstrated the speckle reduced OCT using quasi-SC source at 1700 nm spectral band. By spectral compounding average of OCT images obtained by tunable quasi-SC spectra, we confirmed the improvement of OCT image quality.