An energy-based surgical system includes a light beam source and a probe defining a channel about a longitudinal axis thereof and a side opening near a distal end thereof. Methods of nerve detection using the system include positioning the probe adjacent targeted tissue, transmitting a beam of light from the light beam source through the channel of the probe and the side opening of the probe to the targeted tissue, measuring a response to determine the presence of a nerve within the targeted tissue, and delivering energy to the targeted tissue with the probe to treat tissue.
