Recent content by Loyal bear

I That is my trial in order: 1- holography: coherence 2- orienting missiles: collimation 3- star wars: intensity 4- CD and DVD: collimaton 5- medical surgery: intensity 6- telecommunications and fiber optics: coherence and collimation 7- LASER printer: collimation 8- cutting metals: ...

I tried and saw many books on this topic , but they differ about the characteristics and every book and website say a different characteristic.

Can someone tell me about the characteristic of LASER that enables it from the following usage: 1-holography 2-orienting missiles 3-star wars 4-CD and DVD 5-medical surgery 6- telecommunications and fiber optics 7-LASER printer 8-cutting metals