Q-smart HE are amplified Nd:YAG lasers that can reach up to 2.3J per pulse while keeping excellent beam quality and stability. Using the field-proven Q-smart technology, they encompass plug and play temperature controlled harmonic generators so that the user can choose between various wavelengths: 1064, 532, 355 and 266nm (213 on request). The single longitudinal mode option (SLM), for linewidth narrowing, allows the specifications of these lasers to be adapted to the most demanding applications.