The Nonlinear Absorption Coefficient for Direct Two-Photon Creation of Biexciton |
| W. Ungier and M. Suffczyński Institute of Physics, Polish Academy of Sciences al. Lotników 32/46, 02-668 Warszawa, Poland |
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| Received: November 9, 2001; in final form December 18, 2001 |
| The absorption coefficient for the two-photon creation of biexciton is calculated for CuCl and wurtzite crystals. Because of the resonance effect only the intermediate lowest optically active excitonic states are taken into account. The absorption coefficient is expressed by a functional of the biexciton envelope. The numerical results are computed with the envelope function of Hylleraas-Ore type (modified and minimized by Brinkman et al). The obtained results for CuCl are in good agreement with absorption measurements published by Gale and Mysyrowicz. |
| DOI: 10.12693/APhysPolA.101.295 PACS numbers: 71.35.-y |