Distributed out-coupling of second harmonic generation in a waveguide via nonresonant first-order corrugation

Author

Weissman, Z. ; Hardy, A.

Author_Institution

Fac. of Eng., Tel Aviv Univ., Ramat Aviv, Israel

Volume

28

Issue

9

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

1848

Lastpage

1854

Abstract

In some waveguide materials, strong second-order optical nonlinearity is accompanied by strong harmonic propagation loss, particularly due to absorption. The conversion efficiency of such waveguides can be significantly enhanced by using a distributed out-coupling via a nonresonant first-order corrugation. Analysis of the proposed device is carried out using a coupled-mode approach. The results indicate that in certain cases, the second harmonic generation may be enhanced up to few orders of magnitude. The proposed scheme appears to be efficient mainly in phase-matched situations with moderate harmonic loss (up to about 100 cm^-1). The far field of the proposed surface emitting device is diffraction limited

Keywords

integrated optics; optical harmonic generation; optical waveguide theory; SHG; absorption; conversion efficiency; coupled-mode approach; diffraction limited far field; distributed out-coupling; nonresonant first-order corrugation; phase-matched situations; second harmonic generation; strong harmonic propagation loss; strong second-order optical nonlinearity; surface emitting device; waveguide; Absorption; Frequency conversion; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical materials; Optical surface waves; Optical waveguide components; Optical waveguides; Propagation losses;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.144475

Filename

144475