Theoretical Assessment of Nd:YAG Ceramic Laser Performance by Microstructural and Optical Modeling

An approach combining microstructural and optical modeling based on atomistic simulation results is proposed, in order to assess the performance of Nd:YAG laser ceramics resulting from luminescence and transparency changes as a function of grain size and dopant concentration. It is found that while small grain sizes enhance transparency, luminescence is reduced, resulting in a trade-off to achieve optimum laser performance. These effects are linked to ceramic production by considering different sintering routes. This improved insight into the microstructural effects of Nd:YAG ceramics on laser performance will allow a more targeted experimental optimization of this new class of laser materials.