Differentiate between Pulsed and Continuous Wave (CW) laser.

ANSWER : Pulsed lasers and Continuous Wave (CW) lasers are two distinct types of laser systems. Pulsed lasers emit short bursts of laser energy with specific durations and intervals, while CW lasers produce a continuous beam of laser light.

Pulsed lasers are often used in applications that require high peak power, such as laser cutting, laser ablation, and laser marking. Examples of pulsed lasers include Q-switched lasers and mode-locked lasers. Q-switched Nd:YAG lasers are employed in tattoo removal, while mode-locked Ti:sapphire lasers find applications in ultrafast spectroscopy.

On the other hand, CW lasers produce a constant output power and are commonly used in laser pointers, laser diodes, and laser engraving. Examples of CW lasers include helium-neon (HeNe) lasers, diode lasers used in laser printers, and fiber lasers used for material processing.

In summary, pulsed lasers generate short bursts of laser energy, suitable for high peak power applications, while CW lasers produce a continuous beam of laser light and are commonly used in everyday laser devices.

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