Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 11, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/11/3/034006
Keywords
second-harmonic generation; chirality; radial polarization; vector diffraction theory
Categories
Funding
- Academy of Finland [107009, 113245, 114913, 121953]
- Ministry of Education of Finland
- Academy of Finland (AKA) [113245, 113245, 107009, 121953, 107009, 121953] Funding Source: Academy of Finland (AKA)
Ask authors/readers for more resources
We propose new nonlinear optical techniques as probes of the chirality of surfaces and thin films. The techniques are based on surface second-harmonic generation using focused laser beams. To avoid coupling to the possible anisotropy of the sample, which can also lead to chiral signals and is therefore a problem of traditional second-harmonic probes of surface chirality, the optical beams are applied at normal incidence and possess azimuthal symmetry about the direction of propagation. The handedness is obtained by using incident beams that are circularly polarized or appropriate superpositions of radially and azimuthally polarized higher-order modes. We model numerically four cases of different sample symmetries and demonstrate that the techniques are sensitive only to the chirality and not to the anisotropy. The techniques are therefore absolute probes of surface chirality and are naturally applicable to the microscopy of chiral properties of thin films.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available