Double acousto-optic deflector system for increased scanning range of laser beams

作者：Kastelik J C^*; Dupont S; Yushkov K B; Molchanov V Ya; Gazalet J

来源：Ultrasonics, 2017, 80: 62-65.

DOI：10.1016/j.ultras.2017.04.014

• Acoustooptics
• Deflector
• Paratellurite

A new laser scanning system is presented based on two wide-band acousto-optic deflectors. The interaction medium is tellurium dioxide. Anisotropic interactions take place under two different tangential phase matching configurations in such a way that the acousto-optic bandwidths add up. We demonstrate the feasibility of such a cascade deflection system for the wavelength of lambda = 514 nm. The total frequency bandwidth is Delta f = 100 MHz, equally distributed between the two acousto-optic deflectors. The total angular scan at the output is Delta theta = 4.4 degrees leading to 125 resolvable spots for a 1 mm truncated Gaussian beam.

• 出版日期2017-9