Giant two-photon absorption due to excitonic molecule |
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| Authors: | Eiichi Hanamura |
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| Affiliation: | The Institute for Solid State Physics, The University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan |
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| Abstract: | The direct excitation of excitonic molecule due to the two-photon absorption process is shown to be strongly enhanced because of two effects of the resonance and the giant oscillator strength as known for the bound exciton. Then it is pointed out that the existence of the excitonic molecule can be confirmed also by this two-photon absorption spectroscopy. We discuss also the property of the excitonic molecules highly excited by this method. |
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