Experimental data for 'Residual ellipticity in waveplate-compensated polarization-resolved SHG microscopy may arise from femtosecond laser spectral bandwidth'

Complete dataset of experimental ellipticity measurements for "Residual ellipticity in waveplate-compensated polarization-resolved SHG microscopy may arise from femtosecond laser spectral bandwidth" by Nguyen et al. The dataset includes two-dimensional ellipticity maps (replicates), baseline measurements, and validation data acquired on a Leica TCS SP8 MP multiphoton microscope at 880 nm. Dataset structure and contents are detailed in Supplementary File S4 of the publication. Data format: Each measurement is stored as a NumPy compressed archive (.npz) containing: analog_data: Raw analog input data (2 channels × 9000 samples) from photodiode signal (channel 0) and motor trigger signal (channel 1) without offset subtraction measurement_data: Processed photodiode intensity as a function of polarization analyzer angle (2 × 360 array) with offset subtraction calibration_mean: Dark current offset value used for background subtraction during post-processing calibration_std: Dark current standard deviation recorded as indicator of measurement stability during DAQ warm-up File naming conventions: Individual measurements: YYYYMMDDTHHMMSSZ_description.npz (timestamp with optional description) Full ellipticity maps: HWP-XXX_QWP-YYY.npz (XXX and YYY are 3-digit integer angles) HWP-only baseline measurements: XXX.npz (XXX is a 3-digit integer angle) Processing: Data can be processed using the Python analysis code provided in Supplementary File S2 of the publication. For detailed experimental methods and data interpretation, see the associated publication and Supplementary File S4.