1. Introduction  
2. The HETDEX Pilot Survey  
3. LAE Sample  
4. The UV Slope of Lyman Alpha Emitters  
5. UV versus Ly α SFRs and the Escape Fraction of Ly α Photons  
6. The Ly α Luminosity Function  
7. Evolution of the Ly α Luminosity Density and the Global Escape Fraction of Ly α Photons.  
8. Conclusions