Output coupler design of unstable cavities for excimer lasers
- Istituto Nazionale di Fisica della Materia, Dipartimento di Fisica, Universita di Lecce, 73100 Lecce (Italy)
- Istituto per lo Studio dell`Inquinamento Atmosferico e dell`Agrometeorologia, Consiglio Nazionale delle Ricerche, 73100 Lecce (Italy)
We tested the performance of a XeCl laser with unstable resonators using as an output coupler a phase unifying (PU) mirror, a super-Gaussian mirror, and a hard-edge mirror. The quantitative impact of the output coupler design on the energy extraction efficiency, near-field profile, far-field energy distribution, and spatial coherence time evolution has been investigated. Laser beams of larger brightness have been obtained with the PU unstable cavity. A faster growth of the laser beam spatial coherence has been observed with the PU cavity by time-resolved, far-field measurements. {copyright} 1997 Optical Society of America
- OSTI ID:
- 655244
- Journal Information:
- Applied Optics, Vol. 36, Issue 6; Other Information: PBD: Feb 1997
- Country of Publication:
- United States
- Language:
- English
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