Tang and Cohen [Phys. Rev. Lett. 104, 163901 (2010)] recently demonstrated a scheme to enhance the chiral response of molecules, which relies on the use of circularly polarized light in a standing wave configuration. Here we show a new type of light that possesses orbital angular momentum and enhanced chiral response. In the locations where the beams show enhanced optical chirality, only the longitudinal components of the electric and magnetic fields survive, which has unexpectedly shown what we believe is a new way to yield an enhanced optical chiral response.
© 2012 Optical Society of America
Original Manuscript: June 8, 2012
Manuscript Accepted: June 26, 2012
Published: August 16, 2012
Carmelo Rosales-Guzmán, Karen Volke-Sepulveda, and Juan P. Torres, "Light with enhanced optical chirality," Opt. Lett. 37, 3486-3488 (2012)