Tm:YAG Laser Output Mode: Multi-Transverse Mode

The output mode of a Tm:YAG laser is 'multi-transverse mode' laser output. This means that the laser beam does not have a single, well-defined spatial profile, but rather exhibits multiple transverse modes, leading to a complex and often non-uniform intensity distribution in the beam. This is in contrast to 'single-transverse mode' lasers, which produce a clean and Gaussian-like beam profile. The presence of multiple transverse modes in Tm:YAG lasers is often a result of the resonator design and the gain medium characteristics. Understanding the output mode of a Tm:YAG laser is essential for optimizing its performance and applications.