Monitoring ultrashort pulses by transverse frequency doubling of counterpropagating pulses in random media
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The authors study experimentally the transverse second-harmonic generation of counterpropagating pulses by a quasi-phase-matching in a medium with a random ferroelectric domain structure. The authors show that this parametric process results in a direct realization of the cross correlation of two optical signals and, therefore, it can be employed for direct characterizations of ultrashort pulses including their temporal structure and pulse front tilt. © 2007 American Institute of Physics.
author list (cited authors)
Fischer, R., Neshev, D. N., Saltiel, S. M., Sukhorukov, A. A., Krolikowski, W., & Kivshar, Y. S.