Phase front analysis of the 2TW HELEN Nd:glass laser

Andrew R. Barnes; Thomas H. Bett; Christopher B. Edwards

doi:10.1117/12.259886

20 November 1996 Phase front analysis of the 2TW HELEN Nd:glass laser

Andrew R. Barnes, Thomas H. Bett, Christopher B. Edwards

Proceedings Volume 2870, Third International Workshop on Laser Beam and Optics Characterization; (1996) https://doi.org/10.1117/12.259886
Event: Third International Workshop on Laser Beam and Optics Characterization, 1996, Quebec City, Canada

Abstract

We report on the measurement of the output beam phase distribution of the high power, 30 cm aperture, Nd:glass laser HELEN using a self referencing cyclic radial shear interferometer. This near field interferometry technique for beam quality measurement is evaluated by comparison with measurements of the far-field intensity distribution. Results are also presented on the evolution of the thermal gradients and their effects on the transmitted wavefront quality through the final disc amplifiers following a laser shot.

Citation Download Citation

Andrew R. Barnes, Thomas H. Bett, and Christopher B. Edwards "Phase front analysis of the 2TW HELEN Nd:glass laser", Proc. SPIE 2870, Third International Workshop on Laser Beam and Optics Characterization, (20 November 1996); https://doi.org/10.1117/12.259886

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