Back to Search
Start Over
Two-photon absorption spectroscopy in ZnSe/ZnSSe strained--layer superlattices
- Publication Year :
- 1995
-
Abstract
- We report two-photon absorption photoluminescence excitation (TPA-PLE) measurements in ZnSe/ZnSSe strained-layer superlattices (SLS). Polarization-dependent selection rules are observed in TPA spectra depending on the direction of the exciting field with respect to the growth axis of the SLS. Experimental exciton transition energies have found to be in good agreement with theoretical predictions considering strain and confinement effects. Furthermore by means of comparative non-linear technique the TPA coefficient has been measured at different energies and compared with theoretical predictions including quasi-bidimensional excitonic effects. A satisfactory agreement has been shown for the overall spectral behaviour and in some cases also for the TPA coefficient values.
- Subjects :
- Materials science
Field (physics)
business.industry
Exciton
Superlattice
Physics::Optics
General Physics and Astronomy
Two-photon absorption
Molecular physics
Spectral line
Condensed Matter::Materials Science
Optoelectronics
Photoluminescence excitation
business
Absorption (electromagnetic radiation)
Spectroscopy
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e45c177cadb2b3e4b6a8c8feb26eb326