How do you make the lasers

Question: How do you make the lasers
- Keywords:
  equipment,
  lasers,
  make
Asked by to Mark on 20 Mar 2014. This question was also asked by .
- Mark Wallace answered on 20 Mar 2014:
  
  I buy them 🙂
  
  But they work (roughly!) by getting something so excited with light that it gives our more light.

Question: How do you make the lasers