How can the energy output of a laser be adjusted?

The energy output of a laser can be adjusted by changing the power and duration of the pulse. This is because the energy delivered by a laser is determined by its power (measured in watts) and the time over which that power is applied. By increasing the power, you elevate the intensity of the laser, leading to a higher energy output. Similarly, adjusting the duration of the pulse affects the total energy delivered; for instance, a longer pulse duration allows the laser to emit energy for an extended time, thereby increasing the cumulative energy output. This mechanism is critical in many therapeutic applications, as it allows practitioners to tailor the treatment to the specific needs of the patient based on the desired therapeutic effect.

Other options might suggest alternative methods for adjustment, such as changing the laser type or dietary considerations, but these do not directly relate to how the energy output is modifiable in a clinical setting.