Abstract
Recently there has been tremendous interest in exciton-polariton mode splitting[1] and thresholdless coherent emission[2] in semiconductor microcavities. Previous researchers have observed such splitting through modified cavity resonance in the frequency domain[1] and indirectly in the time domain[3]. We present data, showing direct observation of such exciton-polariton oscillating emission in the time domain for the first time to the best of our knowledge. A simultaneous observation was made in the frequency domain and is in agreement with the expected value. This experimental result supports the view that the previously observed thresholdless coherent emission[2] is not resonant Rayleigh scattering but rather exciton-polariton emission.
© 1994 Optical Society of America
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