requency spectra of polaron oscillations (IMAGE)

Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI)

requency spectra of polaron oscillations

Caption

Fig. 3. Frequency spectra of polaron oscillations. (a)  Frequency spectra of the oscillatory signals shown in Fig. 2. A single excitation pulse A or B generates an electron concentration  ce=0.7 millimoles/liter, the polaron frequency is 4 THz in both cases. After excitation by both pulses A and B (Fig. 2b), i.e., for a total electron concentration ce=1.4 millimoles/liter, the polaron frequency remains unchanged. (b) Driven Imposter: Controlled excitation for adapting the electron concentration leads to polaron spectra of isopropanol and ethylene glycol with practically identical frequency positions and line shapes. In water, polarons of the same frequency display a somewhat larger line width.

Credit

MBI: T. Elsaesser / M. Woerner

Usage Restrictions

The image may only be used with appropriate caption and credit

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.