Abstract
Interest in the lowest even-parity two-photon states in linear-chain π-conjugated polymers has been largely limited to their energies relative to the lowest odd-parity one-photon state. We show that the intensities of the two-photon absorptions to even-parity states that occur below the lowest one-photon states should be tiny in the infinite chain, because of cancellations. This has important implications for the interpretation of third-harmonic generation spectra of polydiacetylenes. A resonance seen in third-harmonic generation of polydiacetylenes that has commonly been assigned as a two-photon resonance is interpreted here as a three-photon resonance.
| Original language | English |
|---|---|
| Pages (from-to) | 10102-10112 |
| Number of pages | 11 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 1994 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Intensities of two-photon absorptions to low-lying even-parity states in linear-chain conjugated polymers. / Guo, Fangyeong; Guo, D.; Mazumdar, S.
In: Physical Review B, Vol. 49, No. 15, 01.01.1994, p. 10102-10112.Research output: Contribution to journal › Article
TY - JOUR
T1 - Intensities of two-photon absorptions to low-lying even-parity states in linear-chain conjugated polymers
AU - Guo, Fangyeong
AU - Guo, D.
AU - Mazumdar, S.
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Interest in the lowest even-parity two-photon states in linear-chain π-conjugated polymers has been largely limited to their energies relative to the lowest odd-parity one-photon state. We show that the intensities of the two-photon absorptions to even-parity states that occur below the lowest one-photon states should be tiny in the infinite chain, because of cancellations. This has important implications for the interpretation of third-harmonic generation spectra of polydiacetylenes. A resonance seen in third-harmonic generation of polydiacetylenes that has commonly been assigned as a two-photon resonance is interpreted here as a three-photon resonance.
AB - Interest in the lowest even-parity two-photon states in linear-chain π-conjugated polymers has been largely limited to their energies relative to the lowest odd-parity one-photon state. We show that the intensities of the two-photon absorptions to even-parity states that occur below the lowest one-photon states should be tiny in the infinite chain, because of cancellations. This has important implications for the interpretation of third-harmonic generation spectra of polydiacetylenes. A resonance seen in third-harmonic generation of polydiacetylenes that has commonly been assigned as a two-photon resonance is interpreted here as a three-photon resonance.
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U2 - 10.1103/PhysRevB.49.10102
DO - 10.1103/PhysRevB.49.10102
M3 - Article
AN - SCOPUS:0000920098
VL - 49
SP - 10102
EP - 10112
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 15
ER -