Solid state laser : A solid-state laser is a type of laser in which a solid serves as the active medium. This usually consists of a crystal or glass that is provided with a suitable dopant. A prominent example is the Nd:YAG laser , which uses a neodymium-doped yttrium aluminum garnet crystal as the active medium.
A QCW (Quasi-Continuous Wave) laser is a type of laser that operates in a pulsed mode, delivering high-energy bursts of light intermittently, unlike a continuous wave (CW) laser which emits a continuous, uninterrupted beam. This pulsed operation allows for higher peak power and energy density compared to CW lasers, making them suitable for applications requiring deep penetration or precise processing of materials.