Hello. I' a student studying solid state laser in Korea. I have some questions about passive q switching using saturable absorber like Cr:YAG. I know Cr:yag is light absorber when with a degree of absorption which is reduced at high optical intensities. For example, using Nd:yag to make a laser at 1064nm, therer are no amplification of stimulated emissions because of high absorption on 1064nm of Cr:yag. But when intensity of cavity increases, it will saturate Cr:yag and it discharged 1064nm photons in an extremely short time. Here, if there is no amplification of stimulated emissions, then it means spontaneous emission make saturable absorber to be saturated?
you are not using much mathematics to explain these topics.So your lectures are very effective and conceptual.thank you sir.
19:34 is the difference between Cavity Dumping Lasers and Q-switching Lasers!
nicely explained
Hello. I' a student studying solid state laser in Korea. I have some questions about passive q switching using saturable absorber like Cr:YAG. I know Cr:yag is light absorber when with a degree of absorption which is reduced at high optical intensities. For example, using Nd:yag to make a laser at 1064nm, therer are no amplification of stimulated emissions because of high absorption on 1064nm of Cr:yag. But when intensity of cavity increases, it will saturate Cr:yag and it discharged 1064nm photons in an extremely short time. Here, if there is no amplification of stimulated emissions, then it means spontaneous emission make saturable absorber to be saturated?
Nice sir
Too slow....
But super....
sir your lecture is excellent but you are very slow that irritates and takes away the pleasure of concept
am sorry to say that
consider 1.5x speed .
@@adarshagrawal5858 hahaha good one