Highly efficient conversion of picosecond Nd laser pulses with the use of group-velocity-mismatched frequency doubling in KDP
Yi WangLaser Physics Centre, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, AustraliaYung-Ho ChuangLaboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 USAR. S. CraxtonLaboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 USABarry Luther‐DaviesLaser Physics Centre, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, AustraliaD. D. MeyerhoferLaboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 USA
1991en
ABI
Annotatsiya
We report an increase in the conversion efficiency from approximately 40% to approximately 75% for type II frequency doubling of 1.053-microm, 1.6-ps-duration pulses in KDP when a delay of approximately 1.45 +/- 0.1 ps between the extraordinary and ordinary pulses is introduced at the input to the doubling crystal. The delay compensates for the effect of group-velocity dispersion in the crystal with the result that the effective interaction length in the crystal is approximately doubled.
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