Details
| Original language | English |
|---|---|
| Pages (from-to) | 1795-1800 |
| Number of pages | 6 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 1 |
| Issue number | 8 |
| Publication status | Published - 15 Apr 1999 |
| Externally published | Yes |
Abstract
The photoluminescence emission from a conjugated polymer blend system is investigated. Line narrowing which can be attributed to amplified spontaneous emission (ASE) is observed upon increasing the excitation density. Pump- probe experiments reveal a spectrally broad positive gain, supporting this notion. The gain dynamics are investigated on a picosecond timescale. A laser based on the polymer blend system is realized by placing the material into an external resonator. The laser emission is characterized with respect to its coherence, tunability and polarization. The dependence of the laser emission on pump polarization and pump wavelength gives insight into the nature and the dynamics of the excited states involved in the lasing process. A model for the gain mechanism in conjugated polymer lasers is proposed based on our measurements.
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In: Physical Chemistry Chemical Physics, Vol. 1, No. 8, 15.04.1999, p. 1795-1800.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Conjugated polymer lasers
T2 - Emission characteristics and gain mechanism
AU - Wegmann, G.
AU - Schweitzer, B.
AU - Hopmeier, M.
AU - Oestreich, Michael
AU - Giessen, H.
AU - Mahrt, R. F.
PY - 1999/4/15
Y1 - 1999/4/15
N2 - The photoluminescence emission from a conjugated polymer blend system is investigated. Line narrowing which can be attributed to amplified spontaneous emission (ASE) is observed upon increasing the excitation density. Pump- probe experiments reveal a spectrally broad positive gain, supporting this notion. The gain dynamics are investigated on a picosecond timescale. A laser based on the polymer blend system is realized by placing the material into an external resonator. The laser emission is characterized with respect to its coherence, tunability and polarization. The dependence of the laser emission on pump polarization and pump wavelength gives insight into the nature and the dynamics of the excited states involved in the lasing process. A model for the gain mechanism in conjugated polymer lasers is proposed based on our measurements.
AB - The photoluminescence emission from a conjugated polymer blend system is investigated. Line narrowing which can be attributed to amplified spontaneous emission (ASE) is observed upon increasing the excitation density. Pump- probe experiments reveal a spectrally broad positive gain, supporting this notion. The gain dynamics are investigated on a picosecond timescale. A laser based on the polymer blend system is realized by placing the material into an external resonator. The laser emission is characterized with respect to its coherence, tunability and polarization. The dependence of the laser emission on pump polarization and pump wavelength gives insight into the nature and the dynamics of the excited states involved in the lasing process. A model for the gain mechanism in conjugated polymer lasers is proposed based on our measurements.
UR - http://www.scopus.com/inward/record.url?scp=0033561590&partnerID=8YFLogxK
U2 - 10.1039/a808612e
DO - 10.1039/a808612e
M3 - Article
AN - SCOPUS:0033561590
VL - 1
SP - 1795
EP - 1800
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 8
ER -