Developers and researchers working with pulsed laser sources are often interested in the maximum power of their laser. With pulsed lasers, however, most measuring devices only indicate the total energy of a pulse or, alternatively, the average laser power. How to measure the peak power of a pulsed laser beam with Ophir Spiricon instruments?
Ophir offers a fast photo sensor with a response time in the nanosecond range - the FPS-1 sensor. It was developed to measure the temporal behavior of a pulsed laser beam. The FPS-1 is easy to connect to an oscilloscope, which displays the power over time during the pulse. Since the oscilloscope does not show the absolute value of the power over time, but only the relative behavior and the shape of the pulse, it cannot be used directly to determine the peak power. However, a simple calculation enables the peak pulse power to be derived from this.