2015-05-042015-05-042008-02-19Saggau, Peter, Reddy, Duemani and Iyer, Vijay, "Method for high speed microscopy with three-dimensional laser beam scanning." Patent US7332705B2. issued 2008-02-19. Retrieved from https://hdl.handle.net/1911/79960.https://hdl.handle.net/1911/79960A system and method for independently controlling the collimation and lateral positioning of a light beam comprises at least one acousto-optic deflector and a pair of counter propagating acoustic waves with offset frequencies. While the frequency offset controls the lateral positioning of the light beam, a frequency gradient across the acousto-optic deflectors controls the collimation of the light beam.15 ppengUtility patentUS7332705B2