Linear and nonlinear operation of a time-to-space processor

Dan M. Marom, Dmitriy Panasenko, Pang Chen Sun, Yeshaiahu Fainman

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The operational characteristics of a time-to-space processor based on three-wave mixing for instantaneous imaging of ultrafast waveforms are investigated. We assess the effects of various system parameters on the processor’s important attributes: Time window of operation and signal conversion efficiency. Both linear and nonlinear operation regimes are considered, with use of a Gaussian pulse profile and a Gaussian spatial mode model. This model enables us to define a resolution measure for the processor, which is found to be an important characteristic. When the processor is operated in the linear interaction regime, we find that the conversion efficiency of a temporal signal to a spatial image is inversely proportional to the resolution measure. In the nonlinear interaction regime, nonuniform signal conversion due to fundamental wave depletion gives rise to a phenomenon that can be used to enhanced the imaging operation. We experimentally verify this nonlinear operation.

Original languageAmerican English
Pages (from-to)448-458
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Issue number2
StatePublished - Feb 2001
Externally publishedYes


Dive into the research topics of 'Linear and nonlinear operation of a time-to-space processor'. Together they form a unique fingerprint.

Cite this