The two-photon absorption corresponding to the creation of a large number of biexcitons with zero momentum is studied in CuCl at 4.2 K. The power dependence of the absorption linewidth suggests liquid-like collisions between the biexcitons. The emission spectrum of the biexcitons produced at K=0 is also presented.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering