Random laser action in ZnO
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We report a direct evidence of random laser in optically pumped ZnO powder. Discrete lasing modes are observed above threshold. The laser emission spectra depend on the angle of observation and are random. The lasing action is attributed to the coherent feedback due to recurrent light scattering in the powder. The lasing threshold intensity depends on the excitation volume.
- Random laser action in ZnO
Applied Physics B
Volume 71, Issue 2 , pp 181-184
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- PACS: 42.70.Hj; 78.20.Wc; 78.55Et
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