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Optics Letters

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  • Vol. 23, Iss. 13 — Jul. 1, 1998
  • pp: 1046–1048

Collinear type II second-harmonic-generation frequency-resolved optical gating for use with high-numerical-aperture objectives

David N. Fittinghoff, Jeff A. Squier, C.P.J. Barty, John N. Sweetser, Rick Trebino, and Michiel Müller  »View Author Affiliations


Optics Letters, Vol. 23, Issue 13, pp. 1046-1048 (1998)
http://dx.doi.org/10.1364/OL.23.001046


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Abstract

Ultrashort-pulse lasers are now commonly used for multiphoton microscopy, and optimizing the performance of such systems requires careful characterization of the pulses at the tight focus of the microscope objective. We solve this problem by use of a collinear geometry in frequency-resolved optical gating that uses type II second-harmonic generation and that allows the full N.A. of the microscope objective to be used. We then demonstrate the technique by measuring the intensity and the phase of a 22-fs pulse focused by a 20×, 0.4-N.A. air objective.

© 1998 1998 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7160) Ultrafast optics : Ultrafast technology

Citation
David N. Fittinghoff, Jeff A. Squier, C.P.J. Barty, John N. Sweetser, Rick Trebino, and Michiel Müller, "Collinear type II second-harmonic-generation frequency-resolved optical gating for use with high-numerical-aperture objectives," Opt. Lett. 23, 1046-1048 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-13-1046


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References

  1. M. Müller, J. Squier, R. Wolleschensky, U. Simon, and G. J. Brakenhoff, “Dispersion pre-compensation of 15 femtosecond optical pulses for high-numerical aperature objectives,” J. Microsc. (to be published).
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