Study of VUV generation by coherent resonant frequency mixing in metal vapors
Abstract
The properties of multiphoton resonances (two, four or more) are exploited to enhance up-frequency conversion rates. Simultaneously, the property of reversibility of coherent interaction is used to minimize the resonant losses (two-photon, four photon absorption). A source of tunable, near bandwidth limited pulses, of more than a millijoule energy per pulse has been developed. A new scheme of computer controlled data acquisition system made it possible to analyse, for the first time, the temporal coherence properties of the amplified pulses (at a rate of 20 pps). The method of interferometric autocorrelation has been applied to the study of multiphoton coherences. Two photon transmission measurements were performed through a heat pipe containing lithium vapor.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- January 1984
- Bibcode:
- 1984STIN...8426989D
- Keywords:
-
- Amplifiers;
- Coherent Radiation;
- Dye Lasers;
- Energy Conversion Efficiency;
- Interferometry;
- Ionization;
- Multiphoton Absorption;
- Optical Pumping;
- Oscillators;
- Picosecond Pulses;
- Tunable Lasers;
- Up-Converters;
- Autocorrelation;
- Computer Techniques;
- Data Acquisition;
- Far Ultraviolet Radiation;
- Heat Pipes;
- Laser Outputs;
- Lithium;
- Mach-Zehnder Interferometers;
- Metal Vapors;
- Phonons;
- Pulsed Radiation;
- Resonant Frequencies;
- Electronics and Electrical Engineering