Optical Stark effect in organic dyes probed with optical pulses of 6-fs duration
Abstract
We report the first observation of the dynamic optical Stark shift on a femtosecond time scale. Pump pulses of 50-fs duration with peak intensities of 1011-1012 W/cm2 were used to cause a Stark shift of the S0 to S1 transition in the organic-dye molecule rhodamine-B. The perturbed spectra were observed with the use of probe pulses of 6-fs duration. The inferred effective transition dipole moment of 7 D is in good agreement with the value derived from the absorption line strength. At the higher pump powers, line-shape distortions and a reduction in the apparent line strength are also noted and discussed.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1988
- DOI:
- 10.1103/PhysRevLett.60.2462
- Bibcode:
- 1988PhRvL..60.2462B
- Keywords:
-
- 33.55.Be;
- 33.70.Jg;
- 42.55.Mv;
- 78.47.+p;
- Zeeman and Stark effects;
- Line and band widths shapes and shifts;
- Dye lasers;
- Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter