Anamorphic prism optics makes it possible to obtain a diffraction-limited (λ/8) circular single spot from index guided phased array lasers. It served not only for beam shaping but also for astigmatism correction and spatial filtering. The optical path analysis based on the interferometric fringe scanning phase measurements both in the near and far fields indicates that the phased array lasers can be applied to such diffraction-limited precise optical systems as optical disk recording, laser beam printing, or second harmonics generation.
© 1989 Optical Society of America
Kimio Tatsuno, Ronald Drenten, Carel van der Poel, Jan Opschoor, and Gerard Acket, "Diffraction-limited circular single spot from phased array lasers," Appl. Opt. 28, 4560-4568 (1989)