Which of the following modes do CO2 lasers utilize?

CO2 lasers are versatile and can operate in multiple modes, including continuous wave (CW), pulsed wave, and gated wave modes.

In continuous wave operation, the laser emits a constant beam of light, which is useful for processes that require continuous, steady energy output, such as cutting or engraving materials. This mode allows for smooth operation and stable heating.

In pulsed wave operation, the laser generates energy in short bursts or pulses. This is often employed in medical and industrial applications where precise control over energy delivery is needed, such as skin resurfacing or performing precise cuts in materials. The pulsed mode allows for high peak power, which can be beneficial for various applications without excessive heating of the workpiece.

Gated wave modes refer to a method where the laser operates in short bursts over specific intervals, effectively combining aspects of continuous wave and pulsed modes. This can be useful in applications that benefit from the ability to rapidly switch the laser on and off, allowing for better control over the energy delivered to the target.

Thus, the ability of CO2 lasers to function in all three of these modes underscores their adaptability and highlights why "all of the above" is the correct answer. Each mode serves different application needs, making CO2 lasers valuable