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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 4 — Feb. 15, 1998
  • pp: 250–252

Cascaded phase shift and intensity modulation in aperiodic quasi-phase-matched gratings

Myoungsik Cha  »View Author Affiliations


Optics Letters, Vol. 23, Issue 4, pp. 250-252 (1998)
http://dx.doi.org/10.1364/OL.23.000250


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Abstract

I propose a method for enhancing the cascaded phase shift of the fundamental wave associated with second-harmonic generation in aperiodic quasi-phase matched (QPM) gratings. The position and length of one of the domains were varied to maximize the cascaded phase shift. A maximum enhancement of 84% in the cascaded phase shift relative to a perfectly periodic QPM grating was obtained at a moderate fundamental input intensity without initial seeding of the second-harmonic wave. All-optical intensity modulation is also proposed with another optimized aperiodic QPM grating.

© 1998 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(230.3990) Optical devices : Micro-optical devices
(230.4110) Optical devices : Modulators
(230.4320) Optical devices : Nonlinear optical devices
(350.2770) Other areas of optics : Gratings
(350.5030) Other areas of optics : Phase

Citation
Myoungsik Cha, "Cascaded phase shift and intensity modulation in aperiodic quasi-phase-matched gratings," Opt. Lett. 23, 250-252 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-4-250

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