If you remove the potential being applied to the medium (gas, ruby, etc), then no more energy is being "injected." The remaining electrons will "relax" to their ground state, and the laser turns off. There is a small portion of time where the photons will excited other electrons, which will then emit photons when they relax, but the time this takes to happen will not be noticeable.
But those few photons perpendicular to the end mirrors will stimulate more atoms, creating many other photons, right? I've never studied any of these things but that's how I understand it.
If I understood this correctly, photons traveling at any angle that's not perpendicular to the 2 end mirrors are absorbed by the side walls. Therefore only the few photons travelling perpendicular to the end mirrors will escape as part of the laser beam. This sounds incredibly inefficient. Imagine if you could redirect ALL the photons into the same beam.
Thanks. Surprised to see Lasers mention in the Writings of the Baha'i Faith.... "We have observed an amazing thing. Lightning or a force similar to it is controlled by an operator and moveth at his command. Immeasurably exalted is the Lord of Power Who hath laid bare that which He purposed through the potency of His weighty and invincible command." - Baha'u'llah (1880s I think.)
![How Does a Laser Work? Quantum Nature of Light - [3]](http://i.ytimg.com/vi/Gbfj_FlEjI4/mqdefault.jpg)
![How Does a Laser Work? Quantum Nature of Light - [3]](/img/tr.png)
The way of explaining concepts is the best . It helps to understand and grasp very easily. Thanks for making such videos...!!!!
Great work! best description I have seen on stimulated emissions. Hard concept for me to get my hands around but getting there! Thanks!
Good work. Very Helpful. Thanks NakedScientists.
This actually helped me a bunch for my science fair
Thank you
I had to watch this for science my mom is gonna freak out when she sees Naked Scientists in my history😂
thank you .. here please take my like ... i have a school research about how lasers work and you have just saved my life :D
thank you so much! great video and channel, but why stop making new videos? the latest one is 1 year ago... Keep going, I like this channel!
thats all well and good but how do you turn off a laser, how do you stop atoms from being stimulated
Very good video!
Easily explained. Nice work
Awwwssooommmmr Yaaaarr!!!!! Thannnkxczz A Lot For Uploading!!
well explained, good job!
If you remove the potential being applied to the medium (gas, ruby, etc), then no more energy is being "injected." The remaining electrons will "relax" to their ground state, and the laser turns off.
There is a small portion of time where the photons will excited other electrons, which will then emit photons when they relax, but the time this takes to happen will not be noticeable.
Great video!
how would u be able to make a laser gun then?
But those few photons perpendicular to the end mirrors will stimulate more atoms, creating many other photons, right? I've never studied any of these things but that's how I understand it.
This is great!
If I understood this correctly, photons traveling at any angle that's not perpendicular to the 2 end mirrors are absorbed by the side walls. Therefore only the few photons travelling perpendicular to the end mirrors will escape as part of the laser beam. This sounds incredibly inefficient. Imagine if you could redirect ALL the photons into the same beam.
amazing video. thanks.
Why does only 1% pass trough the mirror?
I suppose the structure of the mirror is 1% of non reflecting glass. My hypothesis though, I don't really know
Thanks. Surprised to see Lasers mention in the Writings of the Baha'i Faith....
"We have observed an amazing thing. Lightning or a force similar to it is controlled by an operator and moveth at his command. Immeasurably exalted is the Lord of Power Who hath laid bare that which He purposed through the potency of His weighty and invincible command." - Baha'u'llah (1880s I think.)
Thnxx alot
this video is fricking amazing! Wayyy better than minutephysics shit
weird name but i really understand the lesson godd
I see no one naked 😃😁
Her voice sounds like Elise Andrew from IFLS!!
The people in the comment section are dumb. This was very helpful. Thank you
great!
So that 1% goes out to be the laser that we see, and the rest reflects and makes more photons
awesome
happiness
who kept thinking of lazarbeam when watching this
CD and DVD players lol that's so 2004
I've still got a gramophone mate!
noodles
white noodles
fuck this im out
im jk this fucking sucks tho
byeeeeee
hehe, stimulated emission. Im not mature enough to be watching educational videos. Sorry, ill leave you to it.
awesome