August 2001 issue

Figure 2

Infrared laser light is focused to the point where the intensity initiates self-focusing and a white-light filament results. The shape of the optical filaments is measured by a charge-coupled device camera. A voltmeter connected to a simple DC circuit measures the conducting plasma column when the column completes the circuit between the electrodes. (Adapted from ref. 4.)


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© 2001 American Institute of Physics