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Optics Letters

Optics Letters


  • Vol. 22, Iss. 18 — Sep. 15, 1997
  • pp: 1400–1402

Efficient nonlinear phase shifts due to cascaded second-order processes in a counterpropagating quasi-phase-matched configuration

Gary D. Landry and Theresa A. Maldonado  »View Author Affiliations

Optics Letters, Vol. 22, Issue 18, pp. 1400-1402 (1997)

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A counterpropagating quasi-phase-matched configuration is examined that is capable of efficiently producing second-order cascaded nonlinear phase shifts with minimal power lost to the second harmonic. For all-optical switching in a nonlinear Mach–Zehnder interferometer, the calculated minimum input power needed for switching (i.e., to yield a ±π/2 phase shift) is 40 times smaller than the power needed in the standard typeI copropagating configuration. The throughput of this counterpropagating device is 96% at the optimum switching point.

© 1997 Optical Society of America

Gary D. Landry and Theresa A. Maldonado, "Efficient nonlinear phase shifts due to cascaded second-order processes in a counterpropagating quasi-phase-matched configuration," Opt. Lett. 22, 1400-1402 (1997)

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