Optical harmonic generation on the exciton-polariton in ZnSe

Abstract

We study optical harmonic generation on the 1S exciton-polariton in the semiconductor ZnSe. Intense and spectrally narrow exciton resonances are found in optical second (SHG), third (THG), and fourth (FHG) harmonic generation spectra. The resonances are shifted to higher energy by 3.2 meV from the exciton energy in the linear reflectivity spectrum. Additional resonances are observed in the THG and FHG spectra and assigned to combinations of incident and backscattered photons in the crystal. Rotational anisotropy diagrams are measured and further information on the origin of the optical harmonic generation and the involved exciton states is obtained by a symmetry analysis using group theory in combination with a microscopic consideration.

arXiv comment14 pages, 14 figures, submitted to PRB

References in corpus (5)

• Second harmonic generation spectroscopy of excitons in ZnO
• High-Resolution Second Harmonic Generation Spectroscopy with Femtosecond Laser Pulses on Excitons in Cu${}_2$O
• Magneto-Stark and Zeeman effect as origin of second harmonic generation of excitons in Cu${}_2$O
• Exciton spectroscopy of semiconductors by the method of optical harmonics generation
• Third harmonic generation on exciton-polaritons in bulk semiconductors subject to a magnetic field

Cited by in corpus (1)

• Optical second and third harmonic generation on excitons in ZnSe/BeTe quantum wells