Details

Autor(en) / Beteiligte

• Eichler, H.J.
• Massmann, F.
• Zaki, Ch

Titel

Modulation and compression of Nd: YAG laser pulses by self-tuning of a silicon cavity

Ist Teil von

• Optics communications, 1982-01, Vol.40 (4), p.302-306

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

1982

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• A Nd: YAG laser pulse (20 ns halfwidth) passing a silicon crystal (0.5 mm thickness) produces refractive index changes by free carrier production. The polished crystal with parallel faces behaves therefore like a Fabry-Perot cavity with time dependent transmission. With an incident energy density of up to 300 mJ/cm 2 the cavity can be tuned over up to 5 resonances. The temporal shape of the transmitted pulse exhibits a corresponding number of maxima. Experimentally observed pulse shapes are compared with calculations. Deviations between theory and experiment at high energy densities are explained by increasing absorption due to the free-carriers. If the cavity is tuned over a single resonance a pulse compression can be achieved.