학술논문
Light absorption engineering of hydrogenated nanocrystalline silicon by femtosecond laser
Document Type
Article
Author
Source
Optics Letters; September 2012, Vol. 37 Issue: 17 p3639-3641, 3p
Subject
Language
ISSN
01469592; 15394794
Abstract
The light absorption coefficient of hydrogenated nanocrystalline silicon has been engineered to have a Gaussian distribution by means of absorption modification using a femtosecond laser. The absorption-modified sample exhibits a significant absorption enhancement of up to ∼700%, and the strong absorption does not depend on the incident light. We propose a model responsible for this interesting behavior. In addition, we present an optical limiter constructed through this absorption engineering method.