Abstract
The optical nonlinearity (3) of excitons localized by disorder or impurity has a large value as a consequence of the double multiplication of the giant oscillator strength due to exciton localization because the (3) process involves the double repetition of the excitonic transition. The importance of the exciton correlation in the coherent nonlinear optical process is pointed out for the first time. The sign of (3) relative to (1) gives important information about the character of the exciton correlation.
| Original language | English |
|---|---|
| Pages (from-to) | 2533-2536 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 56 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 1986 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)
Fingerprint Dive into the research topics of 'Giant-Oscillator-Strength Effect on Excitonic Optical Nonlinearities Due to Localization'. Together they form a unique fingerprint.
Cite this
Takagahara, T., & Hanamura, E. (1986). Giant-Oscillator-Strength Effect on Excitonic Optical Nonlinearities Due to Localization. Physical Review Letters, 56(23), 2533-2536. https://doi.org/10.1103/PhysRevLett.56.2533