What describes the emission mode of free running pulsed lasers?

The emission mode of free running pulsed lasers is characterized by true pulsed bursts of laser energy, which is precisely what option C describes. In this mode, the laser emits energy in distinct pulses rather than a continuous stream. This pulsed output allows for controlled administration of energy in various applications, including therapeutic ones, which can enhance the effectiveness of the treatment by delivering energy in short, intense bursts that can penetrate tissues without causing significant thermal damage.

In contrast to the other options, a steady output, continuous wave functioning, or controlled energy output do not accurately reflect the behavior of free running pulsed lasers, as they imply a different emission style that does not align with the unique characteristics of pulsed laser operation. Thus, understanding that free running pulsed lasers emit discrete bursts of energy is crucial to recognizing their role and application in laser therapy.