Buffer gas effect on ground and metastable populations in a pulsed CuBr laser
Abstract
Measurements of the time dependence of the concentration of copper atoms in the ground and metastable states in a pulsed CuBr laser have been conducted by monitoring the absorption of the atomic copper lines 244.2 and 510.6 nm. In agreement with previous measurements in a CuCl laser, the populations are found to grow after the dissociation pulse, peaking many tens of microseconds later. Temperature and buffer gas species and pressure have a considerable influence on the details of the temporal evolution. The results are interpreted in terms of a schematic mechanism involving parallel dissociation processes. Qualitative agreement with the experimental results is quite good, but no attempt was made to elucidate the physical processes which actually occur during and after the dissociation pulse. In the course of the experiment the radiative transition probability of the 244.2 nm line was measured and found to be 2,600,000 per sec.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- September 1978
- DOI:
- 10.1109/JQE.1978.1069875
- Bibcode:
- 1978IJQE...14..680T
- Keywords:
-
- Copper Compounds;
- Gas Lasers;
- Ground State;
- Metal Vapor Lasers;
- Metastable State;
- Population Inversion;
- Pulsed Lasers;
- Bromides;
- Electron Transitions;
- Transition Probabilities;
- Ultraviolet Lasers;
- Lasers and Masers