Abstract
A nonlinear optical method to determine the transverse relaxation time of excitonic molecules by means of two-photon echo is proposed. In the case of two-photon transition such as excitonic molecule one needs three pulses to obtain an echo signal. When the wave-vector and frequency of the three successive pulses are denoted by k1,ω1, k2,ω2 and k3,ω3, the two-photon echo can be observed in the direction of 4k2-2k1-k3 with frequency 4ω2-2ω1-ω3. Tuning both ω1 and ω2 to be two-photon resonant with excitonic molecule, we can satisfy the phase-matching condition rather easily for appropriate values of ω3 due to the large dispersion of excitonic polaritons. From the correlation trace of the two-photon echo we can determine directly the transverse relaxation time of excitonic molecules.
| Original language | English |
|---|---|
| Pages (from-to) | 179-182 |
| Number of pages | 4 |
| Journal | Solid State Communications |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1981 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
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Two-photon echo method to determine the transverse relaxation time of excitonic molecules. / Takagahara, Toshihide.
In: Solid State Communications, Vol. 38, No. 3, 1981, p. 179-182.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Two-photon echo method to determine the transverse relaxation time of excitonic molecules
AU - Takagahara, Toshihide
PY - 1981
Y1 - 1981
N2 - A nonlinear optical method to determine the transverse relaxation time of excitonic molecules by means of two-photon echo is proposed. In the case of two-photon transition such as excitonic molecule one needs three pulses to obtain an echo signal. When the wave-vector and frequency of the three successive pulses are denoted by k1,ω1, k2,ω2 and k3,ω3, the two-photon echo can be observed in the direction of 4k2-2k1-k3 with frequency 4ω2-2ω1-ω3. Tuning both ω1 and ω2 to be two-photon resonant with excitonic molecule, we can satisfy the phase-matching condition rather easily for appropriate values of ω3 due to the large dispersion of excitonic polaritons. From the correlation trace of the two-photon echo we can determine directly the transverse relaxation time of excitonic molecules.
AB - A nonlinear optical method to determine the transverse relaxation time of excitonic molecules by means of two-photon echo is proposed. In the case of two-photon transition such as excitonic molecule one needs three pulses to obtain an echo signal. When the wave-vector and frequency of the three successive pulses are denoted by k1,ω1, k2,ω2 and k3,ω3, the two-photon echo can be observed in the direction of 4k2-2k1-k3 with frequency 4ω2-2ω1-ω3. Tuning both ω1 and ω2 to be two-photon resonant with excitonic molecule, we can satisfy the phase-matching condition rather easily for appropriate values of ω3 due to the large dispersion of excitonic polaritons. From the correlation trace of the two-photon echo we can determine directly the transverse relaxation time of excitonic molecules.
UR - http://www.scopus.com/inward/record.url?scp=0019553109&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0019553109&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(81)91131-5
DO - 10.1016/0038-1098(81)91131-5
M3 - Article
AN - SCOPUS:0019553109
VL - 38
SP - 179
EP - 182
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 3
ER -