Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy

Optical Two-Dimensional Fourier Transform Spectroscopy of Semiconductors

Spin-Noise-Detected Two-Dimensional Fourier-Transform NMR Spectroscopy

We introduce two-dimensional NMR spectroscopy detected by recording and processing the noise originating from nuclei that have not been subjected to any radio frequency excitation. The method relies on cross-correlation of two noise blocks that bracket the evolution and mixing periods. While the sensitivity of the experiment is low in conventional NMR setups, spin-noise-detected NMR spectroscop...

Optical two-dimensional fourier transform spectroscopy of semiconductor quantum wells.

Coherent light-matter interactions of direct-gap semiconductor nanostructures provide a great test system for fundamental research into quantum electronics and many-body physics. The understanding gained from studying these interactions can facilitate the design of optoelectronic devices. Recently, we have used optical two-dimensional Fourier-transform spectroscopy to explore coherent light-mat...

Spatially resolved two-dimensional Fourier transform electron spin resonance

In the accompaning Letter [ I] we have described successful FT-ESR imaging experiments utilizing pulsed field gradients. It was shown that the phase encoding method is the preferred one, and it yields spectral-spatial images of a quality comparable to the best cw-ESR spectral-spatial images even though it is only at an early stage of development. The realization of these FT-ESR imaging experime...

Two-dimensional Fourier-transform electron spin resonance in complex fluids

Two-dimensional Fourier-transform ESR spectra from a complex fluid characterized by very short free induction decay times are reported. They provide enhanced resolution to dynamic molecular structure compared to conventional cw-ESR spectra which are inhomogeneously broadened by the macroscopic disorder. A general theoretical analysis based on the stochastic Liouville equation permits us to accu...