Spatio-temporal dynamics of femtosecond laser pulses at 1550 nm wavelength in crystal silicon

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Atıf İçin Kopyala

Kadan V., Pavlova S., Pavlov I., Rezaei H., Ilday O., Blonskyi I.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, cilt.124, sa.8, 2018 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 124 Sayı: 8
• Basım Tarihi: 2018
• Doi Numarası: 10.1007/s00339-018-1986-6
• Dergi Adı: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Spatio-temporal transformation of the femtosecond laser pulses at 1550 nm wavelength in c-Si is observed using the methods of time-resolved microscopy. The temporal dynamics of the pulse manifests itself both in widening of the frequency spectrum and in the change of on-axis time-width. It is shown, that along with Kerr effect, two-photon absorption also contributes to the temporal reshaping of the laser pulse. Despite the fact that absorption length for green light in c-Si is as small as 1 A mu m, generation of visible third harmonics was also observed in c-Si.