Computation of The Efficiency ofHarmonic Generation Using Cascading Configuration. A.S.Jassim |

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Baghdad Science Journal

Abstract

In the present work theoretical relations are derived for the efficiency evaluation for the generation of the third and the fourth harmonics u$ing crystal cascading configuration. These relations can be applied to a wide class of nonlinear optical materials. Calculations are made for beta barium borate (BBO) crystal with ruby laser /.=694.3 nm . The case study involves producing the third harmonics at X. =231.4 nm of the fundamental beam. The formula of efficiency involves many parameters, which can be changed to enhance the efficiency. The results showed that the behavior of the efficiency is not linear with the crystal length. It is found that the efficiency increases when the input power increases. 'I'he walk-off length is calculated for different spot sizes. It is found that when the spot size increases , the walk-off length increases too.

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1.
Journal BS. Computation of The Efficiency ofHarmonic Generation Using Cascading Configuration. BSJ [Internet]. 7Mar.2004 [cited 7Dec.2019];1(1):138-43. Available from: http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/514
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