El-Azab, J., Nada, Y. & Maize, S. (2017) Thermal Focal Length Control in Passively Q-switched End Pulsed-Pumped Ceramics and Single Crystal Yb3+: YAG/ Cr4+: YAG Microchip Laser. NONLINEAR OPTICS QUANTUM OPTICS-CONCEPTS IN MODERN OPTICS , 48(2), 113-132.