An experiment demonstrating lensless ghost imaging (GI) with sunlight has been performed. A narrow spectral line is first filtered out and its intensity correlation measured. With this true thermal light source, an object consisting of two holes is imaged. The realization of lensless GI with sunlight is a step forward toward the practical application of GI with ordinary daylight as the source of illumination.
© 2014 Optical Society of America
Original Manuscript: December 24, 2013
Revised Manuscript: February 25, 2014
Manuscript Accepted: February 26, 2014
Published: April 8, 2014
Xue-Feng Liu, Xi-Hao Chen, Xu-Ri Yao, Wen-Kai Yu, Guang-Jie Zhai, and Ling-An Wu, "Lensless ghost imaging with sunlight," Opt. Lett. 39, 2314-2317 (2014)