NDLI: Ballistic trajectories of femtosecond wavepackets circulating within microcavities

Content Provider	IEEE Xplore Digital Library
Author	Wolf, J.P. Pan, Y.L. Holler, S. Turner, G.M. Beard, M.C. Schmuttenmaer, C.A. Chang, R.K.
Copyright Year	2000
Description	Author affiliation: LASIM, Univ. Claude Bernard, Villeurbanne, France (Wolf, J.P.)
Abstract	Summary form only given. Ballistic motion of wavepackets within resonators, that are larger than the wavepacket length has been debated for the last quater of the 20 th century. We present here the first ever time-resolved measurement of the ballistic motion of optical femtosecond wavepackets in the equatorial portion of a pendant ethylene glycol microdroplet (670 /spl mu/m radius containing 1 g/l Coumarin 510 dye). Two femtosecond laser pulses with /spl lambda//sub 1/=1200 nm and /spl lambda//sub 2/=600 nm, respectively, are used in a pump-probe arrangement. Simultaneous absorption of both wavelengths excites the 400 nm absorption band of the Coumarin dye. The fluorescence is used as a correlation signal. Competitive processes are 3 photon-excited fluorescence of the strong /spl lambda//sub 1/ pump beam and 2 photon-excited fluorescence of the weak /spl lambda//sub 2/ probe beam. When varying the time delay between the /spl lambda//sub 1/, and /spl lambda//sub 2/ pulses, temporal coincidences within the microdroplets are observed.
File Size	94923
File Format	PDF
ISBN	0780363183
DOI	10.1109/IQEC.2000.907858
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-10
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microcavities Ultrafast optics Laser excitation Fluorescence Optical resonators Absorption Motion measurement Optical pumping Anti-freeze Pump lasers
Content Type	Text
Resource Type	Article

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