Measurement models for time-resolved spectroscopy: a comment

Measurement models for time-resolved spectroscopy: a comment

We present an exactly solvable model for photon emission, which allows us to examine the evolution of the photon wave function in space and time. We apply this model to coherent phenomena in three level sytems with special emphasis on the effects of the photon detection process.

Ultrafast Time-Resolved Spectroscopy

Time-resolved fluorescence spectroscopy

New Laser Techniques for Time-Resolved Spectroscopy

A novel spectroscopic tool is presented for measuring the incoherent resonance decay (IRD) of selectively (6 MHz) prepared electronic states. The method utilizes electro-optic switching of a single laser mode that is on or off resonance with respect to the homogeneous molecular packets in the excited ensemble. The technique is applied to a variety of systems: gases at low and high pressures, mo...

Time-resolved subnatural-width spectroscopy.

Spectra that are narrower than the natural width of decaying states can be achieved by beginning the observation of signals at a fixed delay time after excitation rather than immediately afterward. These signals are weaker (and noisier) than the full, time-unresolved signals. Applications of this line-narrowing technique to precision spectroscopy are discussed, and the properties of the resulti...