Suspended graphene waveguides over micrometer-scale metal-mesh screens were used as platforms for Raman scattering. Raman signals of B. megaterium spores were found sensitive to in-plane rotations and tilt of the waveguides with respect to the incident linearly polarized pump beam. When at plasmonic resonance for the equivalent long wavelength of the vibration frequency, the Raman signal exhibited an additional quadratic effect.
© 2013 Optical Society of America
Original Manuscript: October 18, 2012
Revised Manuscript: December 13, 2012
Manuscript Accepted: December 16, 2012
Published: January 14, 2013
Amrita Banerjee and Haim Grebel, "Nonlinear behavior of vibrating molecules on suspended graphene waveguides," Opt. Lett. 38, 226-228 (2013)