Lock-in and Standard DPC raw images associated to publication 10.1364/PRJ.445896

Raw images obtained with helicam C3 in a DPC microscope setup. The raw images were used for the figures in the publication Chiara Bonati, Damien Loterie, Timothé Laforest, Christophe Moser. Lock-in incoherent differential phase contrast imaging. Photonics Research, 2022, 10(1):237. Contents of the data set: <strong>Contrast comparison</strong>: images used for Figure 4. Several USAF targets of different height, introducing varying phase differences. Samples were imaged under both standard and lock-in DPC. <strong>Lock-in DPC</strong>: lock-in DPC image sets. Each image was collected over four cycles of 140 us each. <strong>5_mrad</strong>: 5 mrad sample <strong>Background</strong>: no sample image <strong>I</strong>: Frame I <strong>Q</strong>: Frame Q <strong>Sample</strong>: sample image <strong>I</strong>: Frame I <strong>Q</strong>: Frame Q <strong>13dot8_mrad</strong>: 13.8 mrad sample <strong>15dot1_mrad</strong>: 15.1 mrad sample <strong>18dot9_mrad</strong>: 18.9 mrad sample <strong>35dot2_mrad</strong>: 35.2 mrad sample <strong>50dot5_mrad</strong>: 50.5 mrad sample <strong>Standard DPC: </strong>Same set of images, under standard DPC conditions. Each illumination (left and right) was recorded for 1 us. <strong>5_mrad</strong>: 5 mrad sample <strong>Background</strong>: no sample image <strong>L</strong>: Image under left illumination <strong>R</strong>: Image under right illumination <strong>Sample</strong>: sample image <strong>L</strong>: Image under left illumination <strong>R</strong>: Image under right illumination <strong>13dot8_mrad</strong>: 13.8 mrad sample <strong>15dot1_mrad</strong>: 15.1 mrad sample <strong>18dot9_mrad</strong>: 18.9 mrad sample <strong>35dot2_mrad</strong>: 35.2 mrad sample <strong>50dot5_mrad</strong>: 50.5 mrad sample <strong>Reconstruction</strong>: Image sets used for figures 5 and 6 <strong>USAF_50dot5mrad</strong>: Image sets of a 50.5 mrad glass USAF target. <strong>Illumination</strong>: Folder containing the back-focal plane characterisation of the imaging system, used to compute the transfer functions for phase reconstruction. BFP: the back-focal plane aperture of the 0.4 NA objective P_1: reduced pupil used in the experiments s_L: left source s_R: right source <strong>Lock-in DPC</strong>: lock-in DPC image set. The equivalent exposure time was 464 us. <strong>Standard DPC</strong>: standard DPC image set. Each illumination was exposed for 8 us. <strong>Onion</strong>: Image sets of onion epidermal cells. <strong>Lock-in DPC</strong>: lock-in DPC images for varying equivalent exposure times. 104 us 120 us 136 us 152 us 168 us 184 us 200 us 216 us 232 us 248 us <strong>Standard DPC</strong>: Standard DPC image set at 7 us exposure time