Title
Nonreciprocity In Waveguide Second Harmonic Generation
Abstract
Second-order nonlinearities have prompted a great deal of interest because of the possibility of generating large non-linear phase shifts as a result of cascaded processes. Realizing that in SHG both the conversion efficiency and the nonlinear phase are important in the process leads to a variety of other phenomena. One of the most important signatures of cascaded processes is that they depend on the spatial distribution of the wave-vector phase mismatch (Δk L). The evolution of the nonlinear process at any point effectively depends on the incident (seeding) fundamental and harmonic fields resulting from propagation up to that point. It is found here that if the wave-vector distribution along the propagation is spatially nonuniform, the SHG exhibits a nonreciprocal behavior, i.e., the SHG response depends on which end of the waveguide is the input end. This response was numerically predicted using the couple mode equations for SHG including the terms involving the spatial variation Δk L.
Publication Date
1-1-1996
Publication Title
Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series
Volume
9
Number of Pages
75-
Document Type
Article
Personal Identifier
scopus
Copyright Status
Unknown
Socpus ID
0029695909 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/0029695909
STARS Citation
Trevino-Palacios, Carlos G.; Baldi, Pascal; and Stegeman, G. I., "Nonreciprocity In Waveguide Second Harmonic Generation" (1996). Scopus Export 1990s. 2446.
https://stars.library.ucf.edu/scopus1990/2446