Abstract

Generation of a magnetic field by intense CO₂ laser irradiation is reported. The magnetic field is observed to be greater than several hundred kilo-gauss. The configuration of the target and the observation system are shown in Fig. 1. The laser-irradiated target is composed of two 50-μm thick 2-mm diam copper disks. The front side disk has a 1-mm diam hole at the center for the laser injection. A one-turn coil of 2-mm diameter with 80-Mm diam copper wire is connected to the two disks. The magnetic field is measured by using the 1-mm diam search coil linked to a Tektronix 7104 oscilloscope whose bandwidth is 1 GHz. Figure 2 shows a typical search coil signal (a), magnetic field at the center of the one-turn coil (b), and voltage at gap (c). Signals (b) and (c) are reduced from signal (a).

© 1986 Optical Society of America