Beam divergence studies on a hard edge unstable resonators for a long pulse XeCl excimer laser

Hofstra, R.M. and Goor van, F.A. and Witteman, W.J. (1997) Beam divergence studies on a hard edge unstable resonators for a long pulse XeCl excimer laser. Optics Communications, 144 (1-3). pp. 43-49. ISSN 0030-4018

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Abstract:	The focusability of a long pulse XeCl excimer laser has been improved using confocal positive branch unstable resonators where the outcoupling is done through the convex mirror. A nearly diffraction limited output beam is obtained from hard edge unstable resonators. An improvement of the far field energy distribution is achieved with partial reflecting hard edge outcoupling mirrors. The phase delay between the central part of the beam and the beam edge caused by these partial reflecting mirrors can be reduced by using phase unifying mirrors. Using unstable resonators a brightness of 1.4 × 1015 W/cm2 sr has been obtained from a long pulse XeCl excimer laser
Item Type:	Article
Copyright:	© 1997 Elsevier Science
Faculty:	Science and Technology (TNW)
Research Group:	Laser Physics and Nonlinear Optics (LPNO)
Link to this item:	http://purl.utwente.nl/publications/23703
Official URL:	http://dx.doi.org/10.1016/S0030-4018(97)00378-7
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