Amplitude and phase measurement of mid-infrared femtosecond pulses using XFROG

Author

Reid, D.T. ; Loza-Alvarez, P. ; Brown, C.T.A. ; Beddard, T. ; Sibbett, W.

Author_Institution

Dept. of Phys. & Astron., St. Andrews Univ., UK

fYear

2000

fDate

7-12 May 2000

Firstpage

584

Lastpage

585

Abstract

Summary form only given.Frequency-resolved optical gating (FROG) has been shown to be a versatile technique for the measurement of ultrashort pulses across a wide range of wavelengths, and common approaches rely on using a detector array to record the spectrum of the second-harmonic autocorrelation signal of a pulse. In this work we demonstrate a technique which generates cross-FROG (XFROG) trace by sum-frequency mixing a mid-infrared pulse with a time-delayed near-infrared pulse. By using an adapted version of the principal components generalised projection retrieval algorithms we have been able to characterise both pulses in amplitude and phase.

Keywords

CCD image sensors; high-speed optical techniques; optical correlation; optical harmonic generation; phase measurement; 2.1 mum; XFROG; amplitude measurement; cross-FROG trace; detector array; frequency-resolved optical gating; generalised projection retrieval algorithms; mid-infrared femtosecond pulses; phase measurement; principal components; second-harmonic autocorrelation signal; time-delayed near-infrared pulse; ultrashort pulse measurement; ultrashort pulses; Frequency measurement; Optical arrays; Optical mixing; Optical pulses; Optical recording; Phase measurement; Pulse measurements; Sensor arrays; Ultrafast optics; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.907423

Filename

907423