Ultrafast ultraviolet laser-induced voltage of air

In this work, the time-scale laser-induced voltage (LIV) of air was investigated under KrF excimer laser irradi-ation. The LIV response was fitted by a sum of three exponential functions, where the fitted parameters were influenced by the bias voltage Vb and the laser energy Ein. Higher Vb produced significant LIV. An exponential relationship was observed between the Ein and LIV signal amplitude (Vp). After decreasing the adjustable resistor, the LIV trace was almost triangular and symmetrical due to the impedance effect with the response time which was completely limited by the laser pulse duration. As a potential application, the LIV of air presented a viable method for single-pulse laser detection.

Automated summary

In this study, the time-scale laser-induced voltage (LIV) of air under KrF excimer laser irradiation was investigated. The LIV response was fitted using a sum of three exponential functions, with the fitted parameters being influenced by the bias voltage Vb and the laser energy Ein. Higher Vb resulted in significant LIV. An exponential relationship was observed between Ein and the amplitude (Vp) of the LIV signal. By adjusting the adjustable resistor, the LIV trace became almost triangular and symmetrical, due to the impedance effect and limited response time by the laser pulse duration. As a potential application, the LIV of air presented a viable method for single-pulse laser detection.