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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 22, Iss. 4 — Feb. 15, 1997
  • pp: 245–247

Ultrafast optical switching by use of fully phase-matched cascaded second-order nonlinearities in a polarization-gate geometry

Marco A. Krumbügel, John N. Sweetser, David N. Fittinghoff, Kenneth W. DeLong, and Rick Trebino  »View Author Affiliations


Optics Letters, Vol. 22, Issue 4, pp. 245-247 (1997)
http://dx.doi.org/10.1364/OL.22.000245


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Abstract

We show that cascaded second-order nonlinear-optical processes can occur in a convenient polarization-gate beam geometry. Our arrangement uses type II phase matching, and both individual second-order processes (upconversion and downconversion) are simultaneously phase matched. This geometry can be applied to efficient ultrafast optical switching. With a β-barium borate crystal and lightly focused 250-fs, 7.3-µJ pulses, we achieve a switching efficiency of 15% and an on–off ratio of 3 × 104 on a pulse-length-limited time scale.

© 1997 Optical Society of America

Citation
Marco A. Krumbügel, John N. Sweetser, David N. Fittinghoff, Kenneth W. DeLong, and Rick Trebino, "Ultrafast optical switching by use of fully phase-matched cascaded second-order nonlinearities in a polarization-gate geometry," Opt. Lett. 22, 245-247 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-4-245

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