Abstract

We consider unseeded type  I second-harmonic generation in quasi-phase-matched quadratic nonlinear materials and derive an accurate analytical expression for the evolution of the average intensity. The intensity-dependent nonlinear phase mismatch that is due to the cubic nonlinearity induced by quasi phase matching is found. The equivalent formula for the intensity of maximum conversion, the crossing of which changes the one-period nonlinear phase shift of the fundamental abruptly by π, corrects earlier estimates [Opt.  Lett.    23, 506 (1998)] by a factor of 5.3. We find the crystal lengths that are necessary to obtain an optimal flat phase versus intensity response on either side of this separatrix intensity.

© 2001 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Engineering competing nonlinearities

Ole Bang, Carl Balslev Clausen, Peter L. Christiansen, and Lluis Torner
Opt. Lett. 24(20) 1413-1415 (1999)

Plane waves in periodic, quadratically nonlinear slab waveguides: stability and exact Fourier structure

Joel F. Corney and Ole Bang
J. Opt. Soc. Am. B 19(4) 812-821 (2002)

Limits to compression with cascaded quadratic soliton compressors

M. Bache, O. Bang, W. Krolikowski, J. Moses, and F.W. Wise
Opt. Express 16(5) 3273-3287 (2008)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription