Rev. Phys. Appl. (Paris) 22, 1605-1611 (1987)
DOI: 10.1051/rphysap:0198700220120160500

Ultrafast diagnostics

J.-C. Diels, J.J. Fontaine et W. Rudolph

Department of Physics and Astronomy, The University of New Mexico, Albuquerque, New Mexico 87131, U.S.A.

Abstract
Second order correlation techniques can be used to obtain a complete characterization of femtosecond pulses, in amplitude and phase. The importance of monitoring and controlling the frequency content of ultrashort pulses is discussed. Application of correlation techniques - in particular to three dimensional diagnostics - are reviewed. It is shown that depth scanning alone is sufficient to generate three dimensional images by up-conversion range gating.

Résumé
Les techniques de corrélation du second ordre permettent une caractérisation complète, en amplitude et en phase, des impulsions ultrabrèves. Nous présentons quelques applications de ces techniques, en particulier une méthode d'imagerie tridimensionnelle en second harmonique où des informations peuvent être obtenues sur l'objet par balayage en profondeur uniquement.

PACS
4230 - Optical information, image formation and analysis.
4280E - Optical shutters, windows, diaphragms, deflectors, choppers, and scanners.
4280W - Ultrafast optical techniques.

Key words
optical correlation -- femtosecond pulses -- ultrashort pulses -- correlation techniques -- three dimensional diagnostics -- depth scanning -- three dimensional images -- up conversion range gating