Abstract:
:An adaptive pulse shaper controlled by multiphoton intrapulse interference phase scanning (MIIPS) was used, together with a prism-pair, to measure and cancel high-order phase distortions introduced by a high-numerical-aperture objective and other dispersive elements of a two-photon laser-scanning microscope. The delivery of broad-bandwidth (approximately 100 nm), sub-12-fs pulses was confirmed by interferometric autocorrelation measurements at the focal plane. A comparison of two-photon imaging with transform-limited and second-order-dispersion compensated laser pulses of the same energy showed a 6-to-11-fold improvement in the two-photon excitation fluorescence signal when applied to cells and tissue, and up to a 19-fold improvement in the second harmonic generation signal from a rat tendon specimen.
journal_name
J Biomed Optjournal_title
Journal of biomedical opticsauthors
Xi P,Andegeko Y,Pestov D,Lovozoy VV,Dantus Mdoi
10.1117/1.3059629subject
Has Abstractpub_date
2009-01-01 00:00:00pages
014002issue
1eissn
1083-3668issn
1560-2281journal_volume
14pub_type
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