Title :
Bandwidth-limited diffraction of femtosecond pulses from photorefractive quantum wells
Author :
Brubaker, Robert M. ; Ding, Yi ; Nolte, David D. ; Melloch, Michael R. ; Weiner, Andrew M.
Author_Institution :
Dept. of Phys., Purdue Univ., West Lafayette, IN, USA
fDate :
12/1/1997 12:00:00 AM
Abstract :
The diffraction of 100-fs pulses from the static gratings of photorefractive quantum wells (QWs) produces diffracted pulses that are nearly transform-limited, despite the strong dispersion near the quantum-confined excitonic transitions. This quality makes the QW´s candidates for use in femtosecond pulse shaping, although the currently limited bandwidth of the quantum-confined excitonic transitions broadens the diffracted pulses. Femtosecond electric-field cross correlation and spectral interferometry techniques completely characterize the low-intensity pulses diffracted from stand-alone photorefractive QWs, and from QWs placed inside a Fourier-domain femtosecond pulse shaper
Keywords :
excitons; high-speed optical techniques; light diffraction; light interferometry; photorefractive materials; semiconductor quantum wells; 100 fs; Fourier-domain femtosecond pulse shaper; bandwidth-limited diffraction; diffracted pulse broadening; femtosecond electric-field cross correlation; femtosecond pulse shaping; femtosecond pulses; fs pulse diffraction; low-intensity pulses; nearly transform-limited; photorefractive quantum wells; quantum-confined excitonic transitions; spectral interferometry; stand-alone photorefractive QW; strong dispersion; Bandwidth; Diffraction gratings; Holography; Optical pulse shaping; Optical pulses; Photorefractive effect; Photorefractive materials; Pulse measurements; Pulse shaping methods; Ultrafast optics;
Journal_Title :
Quantum Electronics, IEEE Journal of
