Title :
Interferometric cross correlation with a numerical lock-in: Nonlinear polariton pulse propagation through GaAs
Author :
Nagerl, J.S. ; Stabenau, B. ; Bohne, G. ; Ulbrich, R.G.
Author_Institution :
Gottingen Univ., Germany
Abstract :
Summary form only given. We present a ultrasensitive method for measuring the ultrafast optical response of a sample with respect to its amplitude and phase. Combining interferometric cross correlation, a wavemeter and a numerical lock-in technique, the method is distinguished by its dynamic range (7 orders of magnitude in the intensity) and phase resolution (/spl Delta//spl Phi//2/spl pi/=1/50). Time resolution depends on residual dispersion of the set-up but is limited to /spl ap/40 fs by the width of the input pulses. We demonstrate, as an example, high precision measurements of nonlinear 1s-exciton-polariton propagation through GaAs.
Keywords :
III-V semiconductors; excitons; gallium arsenide; laser mode locking; polaritons; time resolved spectra; 40 fs; GaAs; interferometric cross correlation; nonlinear polariton pulse propagation; numerical lock-in; phase resolution; residual dispersion; ultrafast optical response; Autocorrelation; Extraterrestrial measurements; Filters; Frequency; Nonlinear optics; Optical interferometry; Optical pulses; Optical sensors; Pulse measurements; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.833959