6533b82efe1ef96bd1293a78
RESEARCH PRODUCT
On thermal influence of laser beam irradiation on optical absorption of amorphous as-evaporated As2S3 films
Janis TeterisOlli NordmanNina Nordmansubject
Materials scienceAbsorption spectroscopybusiness.industryAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsAmorphous solidLight intensityOpticsIrradiationElectrical and Electronic EngineeringPhysical and Theoretical ChemistryThin filmbusinessGlass transitionAbsorption (electromagnetic radiation)Saturation (magnetic)description
Abstract Photoinduced changes of the optical absorption in amorphous as-evaporated As 2 S 3 thin films are studied. Before the measurements films were kept at dark for more than two years. The long storage time ensured that the relaxational structural changes caused by the deposition process were absent. As a light source a CW unfocused 488.0 nm Ar laser line was used. The intensity of the laser beam was varied from rather low intensity values up to intensities which raised the temperature of the films above the glass transition temperature. Based on the behavior of the saturation values of the absorption we were able to state that the exposed As 2 S 3 films started to polymerize at 63–69°C which corresponds to the light intensity level of ∼4 W cm −2 .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-01-01 | Optics Communications |