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Optics Letters

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  • Vol. 29, Iss. 17 — Sep. 1, 2004
  • pp: 2070–2072

400-photon-per-pulse ultrashort pulse autocorrelation measurement with aperiodically poled lithium niobate waveguides at 1.55 μm

Shang-Da Yang, Andrew M. Weiner, Krishnan R. Parameswaran, and Martin M. Fejer  »View Author Affiliations


Optics Letters, Vol. 29, Issue 17, pp. 2070-2072 (2004)
http://dx.doi.org/10.1364/OL.29.002070


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Abstract

We demonstrate ultrasensitive intensity autocorrelation measurements of subpicosecond optical pulses in the telecommunication band by using aperiodically poled lithium niobate (A-PPLN) waveguides. The tightly confined optical beam in the waveguides and the chirped poling period facilitate simultaneous high second-harmonic generation (SHG) efficiency and broad phase-matching (PM) bandwidth. The resulting measurement sensitivity is 3.2×10-7 mW2, ~500 times better than the previous record for intensity autocorrelations. We also show that chirped A-PPLN waveguides retain nearly the same SHG efficiency as the unchirped guide as long as the PM bandwidth is not significantly broader than the input spectrum.

© 2004 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.3730) Integrated optics : Lithium niobate
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Shang-Da Yang, Andrew M. Weiner, Krishnan R. Parameswaran, and Martin M. Fejer, "400-photon-per-pulse ultrashort pulse autocorrelation measurement with aperiodically poled lithium niobate waveguides at 1.55 μm," Opt. Lett. 29, 2070-2072 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-17-2070


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