Femtosecond pulse laser second harmonic
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W. Kautek; N. Sorg; J. KrΓΌger
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Article
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1994
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Elsevier Science
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English
β 545 KB
Laser pulses of \_ 300 fs duration (300 x lo-Is s) were apphed for second harmomc generatIon (SHG) at & electrodes, for the first tme The frequency doublmg by reflection at surfaces of centrosymmettrc materials like d 1s generated only at the surface due to the breakmg of the crystal symmetry This m