We present a metamaterial-based random polarization control plate to produce incoherent laser irradiation by exploiting the ability of metamaterial in the local polarization manipulation of a beam upon transmission via tuning its local geometry. As a proof of principle, we exemplify this idea numerically in a simple optical system using a typical L-shaped plasmonic metamaterial with locally varying geometry, from which the desired polarization distribution can be obtained. The calculating results illustrate that this scheme can effectively suppress the speckle contrast and increase irradiation uniformity, which has potential to satisfy the increasing requirements for incoherent laser irradiation.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: September 29, 2011
Revised Manuscript: May 2, 2012
Manuscript Accepted: May 19, 2012
Published: July 9, 2012
Xiaohui Ling, Hailu Luo, Chujun Zhao, Shuangchun Wen, and Dianyuan Fan, "Metamaterial-based polarization control plate for producing incoherent laser irradiation," Appl. Opt. 51, 4749-4753 (2012)