Kotur, M. Andersson, J. Björklund Svensson, J. Brandin, M. Curbis, F. Isaksson, L. Lindau, F. Lindvall, R. Mansten, E. Svärd, R. Thorin, S. Werin, S. JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-MOPO027 English 84-86 MOPO027 laser cathode electron gun emittance Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-MOPO027 http://jacow.org/linac2018/papers/mopo027.pdf We present a setup for producing and characterizing picosecond ultraviolet laser pulses for use in the MAX IV photocathode electron gun preinjector. Frequency-tripled laser pulses from a commercial laser system are shaped directly in the ultraviolet domain using a Fourier-domain pulse shaper. The pulses were characterized using a transitent grating FROG. We discuss a proposed upgrade of the pulse shaper, as well as its limitations.