Multiphoton atomic ionization with ultra-short laser pulses
Abstract
The influence of pulse duration and intense illumination on multiphoton ionization by ultra-short (picosecond) laser pulses are investigated. The roles of polarization, temporal coherence and resonance effects in multiphoton ionization are reviewed, and the influence of interaction time is examined qualitatively with the development of the concept of the characteristic time for a resonant process. Experimental apparatus involved in the irradiation and monitoring of cesium and rare gas ionization is presented. Results of the resonant multiphoton ionization of cesium and krypton atoms at irradiances of 10 to the 9th and 10 to the 13th W/sq cm, respectively, and picosecond pulse lengths and the multiphoton ionization of helium and neon in ultra-intense fields (10 to the 15th W/sq cm) are discussed, noting a good agreement between theory and experiment. The appendix includes the complete texts of several papers supporting the present work.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- February 1979
- Bibcode:
- 1979PhDT........54L
- Keywords:
-
- Cesium;
- Gas Ionization;
- Photoionization;
- Pulse Duration;
- Rare Gases;
- Ultrashort Pulsed Lasers;
- Frequency Response;
- Infrared Lasers;
- Laser Applications;
- Laser Modes;
- Metal Ions;
- Neodymium Lasers;
- Optical Polarization;
- Optical Resonance;
- Perturbation Theory;
- Picosecond Pulses;
- Yag Lasers;
- Lasers and Masers