Title :
Second harmonic generation in coupled LiNbO3 waveguides by reverse-proton exchange
Author :
Amoroso, Antonio ; Di Falco, Andrea ; Leo, Giuseppe ; Assanto, Gaetano ; Parisi, Antonio ; Cino, Alfonso ; Sanseverino, Stefano Riva
Author_Institution :
Nat. Inst. for the Phys. of Matter & Dept. of Electron. Eng., Univ. Roma Tre, Rome, Italy
fDate :
3/1/2003 12:00:00 AM
Abstract :
We demonstrate second harmonic generation of a near-infrared pump in a nonlinearly coupled system formed by longitudinally uniform proton- and reverse-proton-exchanged LiNbO/sub 3/ planar waveguides. Phase- and mode-matched transverse electric (TE/sub 0/) frequency doubling into transverse magnetic higher order guided modes is achieved through temperature control, in agreement with the model.
Keywords :
ion exchange; lithium compounds; optical couplers; optical harmonic generation; optical phase matching; optical planar waveguides; temperature control; LiNbO/sub 3/; coupled LiNbO/sub 3/ waveguides; longitudinally uniform proton-exchanged waveguide; mode-matched transverse electric frequency doubling; near-infrared pump; nonlinearly coupled system; phase-matched transverse electric frequency doubling; phase-matched type 1 SHG; quadratic susceptibility; reverse-proton exchange; second harmonic generation; temperature control; transverse magnetic higher order guided modes; Frequency conversion; Lithium niobate; Nonlinear optics; Optical harmonic generation; Optical refraction; Optical scattering; Optical surface waves; Optical waveguides; Planar waveguides; Tellurium;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.807897
