Group work.
Alignment skills (for all participants).
Hands-on knowledge on modern optical instruments: diode lasers, Nd:YAG lasers, electro-optical modulators, acousto-optical modulators, ray tracing programs for optical system design, matlab/python
Search for useful information (manuals etc.); use it to decide how to best make your measurements; take reasonable measurement habits: check the range, use the most informative distribution of the mreasurement points; check for reproducibility.
Fit models to data, make publication style graphs, validate your numerical simulations using analytical solutions in simple configurations, extract essential information from image data.