These devices generate entities that are characterized in the FROG and SPIDER techniques. A technique using these devices was popularized by a paper on the dissociation of cyanogen (15[1])iodide. (15[2])The (-5[1])state of a reaction (15[1])is studied using so-called “pumps” and “probes” (15[1])supplied (15[1]-5[1])by these devices (15[2])in a (15[1])spectroscopy (15[2])technique. (-5[1])That technique (15[1])using (15[1])these (15[1])devices was pioneered by Ahmed Zewail (15[1])in his study of (*) femtochemistry. (10[2])In another (10[1])technique, (10[1]-5[1])these devices (10[1])are used on a sample to trigger desorption, (10[1])after which the sample is (10[2])ionized. (10[2])That “matrix-assisted” (10[2])technique (10[1])using these devices (-5[1])is often (10[1])paired with time-of-flight (-5[1])mass (-5[1])spectrometry (10[1]-5[1])and is called MALDI. (10[2]-5[2])These (10[1])devices (-5[1])are used to move atoms and nanoparticles in optical tweezing. (10[3])For 10 points, (10[3])name these devices which (10[1])emit a coherent (10[1])beam (10[2])of light. (10[5])■END■ (10[13])