The coherent emission in the direction of the reflection has been investigated under the Brewster angle of incidence by using phase-locked pulse pairs to excite resonantly the excitons in the anisotropic crystal GaSe. The interferogram of the reflected pulse has a long tail corresponding to the free induction decay signal. We also observed the phase difference between the coherent emission from the Γ4 and Γ6 excitonic polarizations in the direction of the reflection.
- Coherent emission
- Phase-locked pulse pair
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics