title: Lateral resolution enhancement using programmable phase modulator in optical coherence tomography.
abstract: 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.
authors.affiliation: School of Electronics Engineering, Kyungpook National University, Daegu,702-701, Korea.
authors.forename: Muhammad Faizan
authors.initials: MF
authors.lastname: Shirazi
authors.affiliation: School of Electronics Engineering, Kyungpook National University, Daegu,702-701, Korea.
authors.forename: Nam Hyun
authors.initials: NH
authors.lastname: Cho
authors.affiliation: School of Nano-Bioscience & Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea.
authors.forename: Woonggyu
authors.initials: W
authors.lastname: Jung
authors.affiliation: School of Electronics Engineering, Kyungpook National University, Daegu,702-701, Korea.
authors.forename: Jeehyun
authors.initials: J
authors.lastname: Kim
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation*; D055096:Optical Devices; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D041623:Tomography, Optical Coherence / Q000295:instrumentation*
keywords: OCT; PAL-SLM; aberration correction; adaptive optics; lateral resolution