| Autor: |
A.D. Case, E. S. Llewelyn, David H. Pitterton, Andrew J. Finlayson, Paul A. Winstanley |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.172740 |
| Popis: |
A number of techniques have been considered for reducing the divergence of the beam of energy generated by a flashlamp pumped dye laser, particularly for those lasers with a high Fresnel number. the principal motivation is to enhance the brightness of such laser beams. The techniques that have been evaluated, or are under active investigation, include: solvent effects; unstable resonators; telescopic resonators; oscillator amplifier configurations; and phase conjugation techniques. Results are presented that show that judicious choice of solvents can give a modest reduction in divergence and improvements of at least a factor two in beam brightness. More sophisticated techniques such as the use of a telescopic resonator can enhance the brightness by a factor in excess of 200. There is scope for further improvement in beam quality by suitable combinations of techniques or materials. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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