wasi-uz-zaman Messages 89 Reaction score 1 Thread starter Dec 8, 2012 #1 hi , does input light signal for laser amplification has to be provided by the external source or it is created by lasing material itself?
hi , does input light signal for laser amplification has to be provided by the external source or it is created by lasing material itself?
Gordianus Messages 536 Reaction score 149 Dec 8, 2012 #2 Every laser starts from the background signal given by spontaneous emission.
Cthugha Science Advisor Messages 2,114 Reaction score 609 Dec 8, 2012 #3 You can also seed one laser with a different laser as is typical for tunable lasers like Ti:Sapph.