A method for obtaining one or more images of a sample using a microscope includes dividing, using a reverberation cavity, a first one of a plurality of laser pulses into a plurality of sequential sub-pulses, each of the plurality of sequential sub-pulses having a power that is less than a previous one of the plurality of sequential sub-pulses, directing, using the one or more lenses of the microscope, the plurality of sequential sub-pulses onto a portion of the sample to generate a plurality of signals, each of the plurality of signals being associated with a different depth within the sample, and detecting the plurality of signals from the sample to generate one or more images of at least a portion of the sample.