Abstract
We report spectral and intensity-dependent measurements of the two-photon photoconductivity in ZnS crystals using two different frequency radiations. Photocurrents produced by each beam separately were determined and subtracted. We found that the two-photon photoconductivity usually varies linearly with the intensity of one source when that of the other source is held constant. The spectral measurement shows a rise of the two-photon photoconductivity at the crystal energy gap (3.82 eV), and an interesting forbidden one-photon but allowed two-photon transition at 4.57 eV.
| Original language | English |
|---|---|
| Pages (from-to) | 920-923 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 30 |
| Issue number | 19 |
| DOIs | |
| State | Published - 1973 |