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 537 Reaction score 150 Dec 8, 2012 #2 Every laser starts from the background signal given by spontaneous emission.
Cthugha Science Advisor Messages 2,116 Reaction score 611 Dec 8, 2012 #3 You can also seed one laser with a different laser as is typical for tunable lasers like Ti:Sapph.