Continuous Wave (CW) lasers emit a constant beam of light without interruption. Unlike pulsed lasers, which release energy in short bursts, CW lasers provide a steady output, making them ideal for applications requiring consistent power. They are commonly used in fields such as telecommunications, medical treatments, and industrial processes. These lasers operate by maintaining a continuous flow of energy through the gain medium, which can be a gas, liquid, or solid. Popular types of CW lasers include Helium-Neon lasers and Diode lasers. Their reliability and efficiency make them essential tools in various scientific and commercial applications.