Abstract
Summary form only given. Second harmonic generation (SHG) is investigated in planar waveguide geometry under conditions for which the use of a linear grating fabricated on top of the waveguide reproduces a photonic band-gap structure. The fundamental mode of the guide, which coincides with the fundamental pump frequency, is tuned at the photonic band edge resonance in order to enhance field localization effects. However, the linear grating alone is not able to produce both field confinement and phase-matching of the SHG process. Phase-matching is obtained with the additional modulation of the nonlinear susceptibility /spl chi//sup (2)/, as in conventional quasiphase-matching schemes. The conversion efficiency achieved using both linear and nonlinear gratings is orders of magnitude greater than that of a quasi-phase-matched device of the same length. Enhancement of the second harmonic generation (SHG) in Cerenkov configuration is also investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
