Ultrahigh-resolution coherence spectroscopy by means of periodic excitation with picosecond pulses
Abstract
The feasibility of ultrahigh-resolution coherence spectroscopy with a train of picosecond light pulses from a synchronously pumped mode-locked and cavity-dumped dye laser is demonstrated. Narrow resonances of periodic pulse excitation are observed whenever the pulse repetition rate of the laser of a higher harmonic coincides with the frequency splitting of coherently excited levels. The zero-field hyperfine splitting of the Na-ground state (1771.6 MHz) could be measured in the 2100th order of the excitation rate with a resonance halfwidth of 800 Hz.
- Publication:
-
Optics Communications
- Pub Date:
- February 1982
- DOI:
- 10.1016/0030-4018(82)90050-5
- Bibcode:
- 1982OptCo..40..441H
- Keywords:
-
- Atomic Excitations;
- Coherent Light;
- Hyperfine Structure;
- Laser Spectroscopy;
- Optical Measurement;
- Picosecond Pulses;
- Dye Lasers;
- High Resolution;
- Laser Mode Locking;
- Laser Outputs;
- Microwaves;
- Optical Pumping;
- Optical Resonance;
- Sodium;
- Lasers and Masers