Laser pulses are some of the shortest events ever created. For some time, it was possible to create ultrafast laser pulses, but not to measure them. Today, powerful tools exist to collect much more accurate information on characteristics such as pulse duration, shape and form, as well as noise level of pulse waves. Laser pulse diagnostic systems, including Spider, FROG and Autocorrelator, are commonly used to characterize the output of ultrafast lasers. These systems help to determine the quality of the output, leading to highly sophisticated semiconductors, electrical circuitry, and even biomedical products.