Which of the following best contrasts pulsed emitters with continuous wave emitters?

• A. Pulsed Emitters deliver energy in short pulses; Continuous Wave Emitters deliver energy continuously.
• B. Pulsed Emitters emit energy continuously.
• C. Continuous Wave Emitters emit energy in bursts.
• D. Pulsed Emitters are always off.

Answer: (A)

Pulsed emitters deliver energy in short bursts, while continuous wave emitters provide a steady, uninterrupted output. In a pulsed system, energy is emitted for a brief pulse duration, then off for a period; this is described by pulse width, repetition rate, and the resulting duty cycle, which determines the average power over time. A continuous wave emitter, on the other hand, keeps emitting at a constant level with no off intervals. This fundamental difference in how energy is delivered over time is exactly what contrasts pulsed from continuous emitters.