Lateral resolution enhancement using programmable phase modulator in optical coherence tomography
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- Lateral resolution enhancement using programmable phase modulator in optical coherence tomography
- Shirazi, Muhammad Faizan; Cho, Nam Hyun; Jung, Woonggyu; Kim, Jeehyun
- Issue Date
- IOS PRESS
- BIO-MEDICAL MATERIALS AND ENGINEERING, v.26, pp.S1465 - S1471
- Adaptive optics plays an important role in the correction of high-order aberrations to enhance lateral resolution. An OCT system coupled with a programmable phase modulator is designed to verify lateral resolution improvement. The Hamamatsu high-resolution, non-pixelized, optically addressed light modulator (PAL-SLM) PPM X7550 series is used to correct aberrations, utilizing a simple method based on phase information from OCT images. The advantages of this method are its high simplicity and low cost. A raster scanning technique is adopted to scan samples covered with scattering suspension. Metal lines covered with scattering suspension are imaged, and a respective correction is applied to remove the aberration. Results demonstrate an improvement in lateral resolution on metal grid samples
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