Published January 1, 2008
| Version v1
Conference paper
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Two-Photon Indirect Absorption in GaSe
- 1. Vilnius State Univ, Inst Mat Sci & Appl Res, Sauletekio Ave 10, LT-10223 Vilnius, Lithuania
- 2. Royal Inst Technol, Dept Microelect & Appl Phys, SE-16440 Stockholm, Sweden
Description
Two-photon absorption (TPA) in GaSe is detected in the narrow (about kT) spectral range above the indirect exciton energy for E perpendicular to c light polarization. The appearance of TPA enhancement within narrow spectral region links to the resonant Raman scattering and anti-Stockes photoluminescence previously identified in GaSe. Extracted TPA coefficient is of the order of 10 cm/W and 5-10 times exceeds ones obtained previously for lower quanta energies.
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