Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9586243 | Journal of Luminescence | 2005 | 4 Pages |
Abstract
Spectrally narrowed emission (SNE) in 2,5-bis(4-biphenylyl)thiophene (BP1T) crystals is investigated using fs laser pulse. Two different types of narrowing are observed at different vibronic emission bands with increasing pump intensities. Based on their pump intensity dependence and illumination area dependence, we assign the SNE at 20,200 cmâ1 (β-band) to amplified spontaneous emission (ASE) and the SNE at 21,600 cmâ1 (α-band) to superfluorescence rather than ASE.
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Authors
S. Kobayashi, F. Sasaki, H. Yanagi, S. Hotta, M. Ichikawa, Y. Taniguchi,