Relaxation time distribution from time domain induced polarization measurements

polarization-insensitive time-domain OFT

We have demonstrated the generation of a 320 Gb/s NyquistOTDM signal by rectangular filtering on an RZ-OTDM signal with the filter bandwidth (320 GHz) equal to the baud rate (320 Gbaud) and the reception of such a Nyquist-OTDM signal using polarization-insensitive time-domain optical Fourier transformation (TD-OFT) followed by passive filtering. After the time-to-frequency mapping in the TD-OFT...

Relaxation time measurements in frequency and time-domain photoacoustic spectroscopy of condensed phases

The use of the photoacoustic spectroscopy (PAS) technique to measure nonradiative lifetimes in either the frequency or time-domain mode is discussed. Expressions are presented for the dependence of the cell pressure upon the lifetime, and the modifications introduced by the microphone transfer function are discussed. It is shown that in both measurement modes thermally and optically thick speci...

Para-Hydrogen Induced Polarization at Time Domain NMR Spectrometer

Nuclear Magnetic Resonance (NMR) is a widely used spectroscopic method in a broad range of disciplines. Unfortunately NMR suffers from a low intrinsic sensitivity. The low sensitivity of NMR can be successfully improved by application of hyperpolarization technique called Para-Hydrogen Induced Polarization (PHIP) which was discovered in 1986 [1-3]. Till now, a substantial progress in the method...

Bayesian inference of the Cole–Cole parameters from time- and frequency-domain induced polarization

The inversion of induced-polarization parameters is important in the characterization of the frequency electrical response of porous rocks. A Bayesian approach is developed to invert these parameters assuming the electrical response is described by a Cole–Cole model in the time or frequency domain. We show that the Bayesian approach provides a better analysis of the uncertainty associated with ...

Measuring time-domain spectral induced polarization in the on-time: decreasing acquisition time and increasing signal-to-noise ratio