Studies to enhance the beam quality from flashlamp-pumped dye lasers

David H. Pitterton; Paul A. Winstanley; Andrew J. Finlayson; A. D. Case; E. S. Llewelyn

doi:10.1117/12.172740

1 June 1994 Studies to enhance the beam quality from flashlamp-pumped dye lasers

David H. Pitterton, Paul A. Winstanley, Andrew J. Finlayson, A. D. Case, E. S. Llewelyn

Proceedings Volume 2115, Visible and UV Lasers; (1994) https://doi.org/10.1117/12.172740
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

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.

Citation Download Citation

David H. Pitterton, Paul A. Winstanley, Andrew J. Finlayson, A. D. Case, and E. S. Llewelyn "Studies to enhance the beam quality from flashlamp-pumped dye lasers", Proc. SPIE 2115, Visible and UV Lasers, (1 June 1994); https://doi.org/10.1117/12.172740

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