Time-resolved optical gating based on dispersive propagation: a new method to characterize optical pulses

Creators: Koumans, Roger G. M. P.; Yariv, Amnon

Abstract

We introduce the technique of time-resolved optical gating (TROG) based on dispersive propagation (DP), a new noninterferometric method for characterizing ultrashort optical pulses in amplitude and phase without the need for a short optical gating pulse. TROG is similar to frequency-resolved optical gating except that the role of time and frequency is interchanged. For the DP-TROG geometry, we show that measurements of the autocorrelation trace of the pulse after propagation through a medium with variable dispersion together with a single measurement of its intensity spectrum contain sufficient information to reconstruct the pulse in amplitude and phase. Pulse reconstruction for this DP-TROG geometry works very well even for the case of a nonlinearly chirped double pulse. Compared with other methods, DP-TROG does not introduce an ambiguity in the direction of time for the pulse. Due to its simplicity and improved sensitivity, DP-TROG is expected to be useful in characterizing low-energy pulses.

Additional Information

"©2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." Manuscript received January 1, 1999; revised June 29, 1999. This work was supported by the Defense Advanced Research Projects Agency (DARPA, R. Leheny) and by the Office of Naval Research (ONR, Y. S. Park).

Files

KOUieeejqe00.pdf

Files (240.8 kB)

Name	Size	Download all
KOUieeejqe00.pdf md5:69996b837430a57d1010099fb68c89a1	240.8 kB	Preview Download

Additional details

	All versions	This version
Views	0	0
Downloads	0	0
Data volume	0 Bytes	0 Bytes