Chairperson, Graduate Committee: Joseph A. ShawShaffer, Heather Rose2022-11-092022-11-092022https://scholarworks.montana.edu/handle/1/16962Q-switched-mode-locking in a Nd:YAG bulk resonator was demonstrated using a semiconductor saturable absorber mirror (SESAM). A 10-W-pulsed-diode-pumped Nd:YAG laser system at Quantel USA by Lumibird, Inc. was adapted for mode-locking operation in a breadboard setup. Three SESAM mirrors were tested with initial reflectivities R 0=85%, 90%, and 95% in several cavity configurations to show enhanced sub-nanosecond pulse modulation at the free spectral range of each resonator. Transient Q-switched and long-pulse envelopes are shown with underlying mode-locked pulse modulation.enTransients (Electricity)LasersSemiconductorsMirrorsProfessional PaperCopyright 2022 by Heather Rose Shaffer