TEM00 mode

TEM00 mode refers to the fundamental mode of light propagation in a laser or optical system. In this mode, the light beam has a Gaussian intensity profile, meaning it is brightest at the center and gradually decreases toward the edges. This mode is characterized by a single, circular cross-section and lacks any nodes or cuts in its intensity, making it the most stable and efficient for applications like communications and precision cutting. TEM00 is critical because it offers the best focus and beam quality, resulting in a clean and coherent light output.