Two photon absorption characteristics of bulk GaTe crystal

YÜKSEK M., Ertap H., ELMALI A., YAĞLIOĞLU H. G., Mamedov G. M., KARABULUT M., ...Daha Fazla

OPTICS AND LASER TECHNOLOGY, cilt.44, sa.7, ss.2178-2181, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 7
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.optlastec.2012.03.005
  • Dergi Adı: OPTICS AND LASER TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2178-2181
  • Anahtar Kelimeler: Nonlinear absorption, Two photon absorption Z-scan, GaTe crystal
  • Gazi Üniversitesi Adresli: Evet

Özet

We have investigated the structural and optical properties of bulk GaTe crystal grown by vertical Bridgman method. Two photon absorption (TPA) properties of GaTe crystal have been investigated by the open aperture Z-scan technique under 1064 nm wavelength with 4 ns or 65 ps pulse durations. The TPA coefficients are greater in ns regime than that of ps regime. Upon increasing intensity of incident light from 5.02 x 10(7) W/cm(2) to 1.07 x 10(8) W/cm(2), the TPA coefficients increased from 3.47 x 10(-6) cm/W to 8.53 x 10(-6) cm/W for nanosecond excitation. Similarly, when intensity of incident light was increased from 6.81 x 10(8) W/cm(2) to 9.94 x 10(8) W/cm(2) the TPA coefficients increased from 3.53 x 10(-7) cm/W to 6.83 x 10(-7) cm/W for picosecond excitation. Measured TPA coefficient of GaTe crystal is larger than that of GaSe and GaS layered crystals. (c) 2012 Elsevier Ltd. All rights reserved.