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A pulsed laser is a type of laser that emits energy in discrete, short bursts or pulses rather than a continuous beam. These pulses can vary in duration and frequency, and the characteristics of the pulses can be adjusted for specific applications. Pulsed lasers are distinguished by their pulse width, which can range from femtoseconds (10^-15 seconds) to microseconds (10^-6 seconds), and their repetition rate, which refers to how often the pulses are emitted.