Ruby-Laser Induced Photoconduction in 9, 10-Dichloroanthracene and 9, 10-Dibromoanthracene

Abstract

Photoconduction induced by Q-switched ruby laser has been studied in 9, 10-dichloroanthracene and 9, 10-dibromoanthracene single crystals. The dependence of induced charges on the laser intensity was measured in the region from 10²³ to 3×10²⁴ photons/cm²·s. Both compounds show the third power dependence in the higher intensity region. In the low intensity region, however, they show linear dependence. The carrier generation showing the linear dependence was explained as the process involving triplet excitons produced by the S-T absorption.