Absence of Exciton Quenching in the Presence of Strong Fields at High Frequencies
نویسندگان
چکیده
We have studied the response of excitons in a multiple quantum well structure under the presence of intense midinfrared fields. Peak fields (∼10 V/cm, in the plane of quantum wells) that would cause exciton quenching at low frequencies (up to ∼ GHz) are observed to have no significant quenching effect on the exciton resonance when applied at ∼100 THz. We attribute this lack of quenching to the short period of the strong, high frequency field compared to the exciton response time.
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