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Efficiency of short-pulse type-I second-harmonic generation with simultaneous spatial walk-off, temporal walk-off, and pump depletion

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2 Author(s)
Haifeng Wang ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Weiner, A.M.

We have developed a theory which for the first time predicts the efficiency of type-I second-harmonic generation (SHG) with simultaneous spatial and temporal walk-offs and with pump depletion. In order to validate our theory, we have compared its predictions with a numerical solver. We also have measured the conversion efficiency for type-I SHG in experiments with ∼120--fs laser pulses in BBO and LBO crystals long enough that both temporal and spatial walk-off are important. Comparison supports our theoretical analysis. Our theory provides a useful tool for estimating SHG efficiency with pulsed sources in both nondepletion and depletion regions.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:39 ,  Issue: 12 )

Date of Publication:

Dec. 2003

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