Which lasers can operate in continuous mode and also be mechanically switched to gated mode?

The option indicating CO2 and Diode lasers as the right choice highlights the versatility and functionality of these types of lasers. CO2 lasers are well-known for their ability to operate in a continuous wave (CW) mode, delivering a steady output for applications like cutting, welding, and engraving. Additionally, they can also be fashioned to operate in a gated mode, which can involve pulsing the laser output for specific applications, such as material processing that requires varying intensity or precision.

Diode lasers further exemplify this capability. They can also switch between continuous and gated modes, enabling them to adapt to different applications such as medical procedures and telecommunications. Their compact size and efficiency make them popular in various industries that may require flexibility in operation modes.

The combination of these operational modes in both CO2 and Diode lasers supports the idea that these specific laser types can effectively serve in environments that necessitate either a steady output or pulsed output, depending on the requirements of the task at hand.