•  
  •  
 

Journal of Undergraduate Research

Keywords

quasi phase matching, laser second-harmonic generation, glass

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

Abstract

Since the invention of lasers it has been possible to convert laser light into harmonics. This is a good way to achieve new shorter wavelengths of light. Unfortunately, all materials have a frequency-dependent refractive index that causes light of different frequencies to travel at different speeds. This means that the laser light which generates the harmonic waves travels at a different speed than the harmonics themselves. When this happens the waves can quickly get out of phase and the harmonics generated up stream cancel with those generated down stream. Good conversion in laser harmonic generation cannot be achieved in glass due to this phase mismatching. I investigated a technique to overcome this problem in glass known as quasi phase matching.

Download

Included in

Physics Commons

Share

COinS