6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
6 жыл бұрын
Пікірлер
@arthurmario5996 Ай бұрын
presented so clearly that I can understand it with only basic physics! well done!
@nathanroche7908 5 ай бұрын
Excellent.
@ruudi6580 8 ай бұрын
thanks for the upload!
@BlastinRope 9 ай бұрын
whatever nerd lmao
@PrashantSingh-py5in 9 ай бұрын
Great lecture, By the who else can see a dog's face on green board the behind professor. Writing has been cleaned in the way using a duster that formed an image.
@PeterBaumgart1a 11 ай бұрын
At about 9:55: 1keV corresponds to about 1 nm wavelength, not 0.1A. 100x off...
@arunnavinjoseph9262 Жыл бұрын
the equations in the power point presentation are not clearly seen.
@guoqiangzhang1535 Жыл бұрын
This professor is active and explains the topic OAM in a very interesting way. I like him and his talk as well.
@assassin_un2890 Жыл бұрын
Hi i have found an error in 18:00 to 19:00 you tell about solving the equations but d(S)/dt is not equal to Gamma S but maybe equals to S^(dagger), can you help me with this?
@kkm5384 Жыл бұрын
video presentation, is not comfortable, barbecue the laser pointer is not visible (i know technically the content is different screen than actual screen with laser pointer)
@crybaby1637 Жыл бұрын
Wow, very useful. Unfortunately i get here by very specific coincidents so no doubts its have a not such much views. But i hope owners of this channel not running to idea "get more views", because as part of world wide community agreement of transfering knowlege and information to all people independently of their wealth its absolutely beautiful and perfect. Thanks for teaching me something new, Paul Corkum
@kaamutsupsungkaksem9181 Жыл бұрын
Imperial college London PCA lecture of Dr Donna Strickland bring me here
@sassanmoradi1586 Жыл бұрын
great guy, great teacher, great lecture.
@yizharamir5915 Жыл бұрын
Great lecture!
@nth2tell Жыл бұрын
Just throw me the textbook already
@naimrozali4654 Жыл бұрын
where i can get the lecture notes?
@vinnycrism Жыл бұрын
A very relaxed lecture. No one has explained things with this much clarity and like a story.
@tiagogarrao4908 Жыл бұрын
Amazing lecturer and very interesting content!
@dsjgfhidupgjret Жыл бұрын
15:40
@ambarshukla4389 2 жыл бұрын
At 34:16 in equation 3, I don't understand why P2 is expressed in terms of E1?
@shanedevlin3752 2 жыл бұрын
P2 (the induced second order polarization) is proportional to chi-2 and the square of the electric field. The electric field we are considering is that from the laser source, which is E1.
@Lumenum 2 жыл бұрын
excellent! I'm new to the topic, but the speaker makes every point very clear. Bravo!
@jacobvandijk6525 2 жыл бұрын
@ 4:36 We only see that two laser beams are converted by a crystal in four laser beams. Without the crystal it does not happen. So scattering is not demonstrated here ... "in front of your eyes".
@vstvgn4240 2 жыл бұрын
at 34:54, is there a typo for the expression of centrosymmetrical potential? The restoring force term should not contain order of even, rigtht?
@PaddyNinja 2 жыл бұрын
What do you use as a "phase conjugate mirror" sir? A Prism?
@foryou7657 2 жыл бұрын
I need help... I have assignment about optical fiber
@mahfuzulhoque3465 2 жыл бұрын
Amazing lecture with a balanced portion of information. Thanks so much Prof. Boyd for the lecture.
@user-co8ke8ll7e 2 жыл бұрын
1:11:17 THG
@Finlaymacnab 2 жыл бұрын
What a treat to find this lecture!
@kpawan75 2 жыл бұрын
Excellent Lecture by Prof. Boyd
@daulandeyoung8884 3 жыл бұрын
Where can I get these slides?
@odeia18 3 жыл бұрын
i read his book before knowing about this lecture, and i always imagined him as such a lovely humble person who is also fun and talks about this subject with joy, and i wasnt wrong. we are so honored for his personality
@kkm5384 Жыл бұрын
did you read the entire book? i mean thoroughly.? difficult for me to read after some pages.. because the background knowledge needed is lacking in me. i suppose.
@HernandezOmarCharlie 3 жыл бұрын
💡 🌊 🌍 🧲 🛑 ✋🏽
@asifadio 3 жыл бұрын
Legendary Robert W. Boyd.. I've been using his book for years now
@giorgixyz1909 3 жыл бұрын
I wish I could know where he's pointing to since whenever he's pointing to something it's not being shown
@siheonseong5920 3 жыл бұрын
Father of nonlinear optics...
@annaneco 3 жыл бұрын
This video helped me very much
@IfteKhairulAlamBhuiyan 3 жыл бұрын
06:14 those eye glass remind of Prof Boyd :)
@yosrihaddad4833 3 жыл бұрын
The best !
@protectionsecularism6090 3 жыл бұрын
this video lecture was incorrectly uploaded.
@InfiniteUniverse88 3 жыл бұрын
19:19 Can femto lasers be turned into laser weapons? Can the laser actually be one squared centimeter, at least in principle? Companies like Honeywell, Lockheed Martin, Raytheon, Northrop Grumman, and Boeing promote 1mw lasers. The HHG pulse "probe" generates 8 orders of magnitude more power.
@Giancarlojc 3 жыл бұрын
Very interesting. Its a bit frustrating to not have his laser pointer on the slide.
@ollielewis8590 3 жыл бұрын
Fantastic explanation
@kanchisanonthasri7376 4 жыл бұрын
Thank you so much for your kindness ❤
@unrealreality5419 4 жыл бұрын
Damn a rare combo! Genius mind and a one who can deliver it well!
@coreyashford9905 4 жыл бұрын
One thing that occurred to me when watching this is that the resolution of the image is independent of how far away the detector is from the object, in the configuration where the object is illuminated with the patterns. Of course, you might need a telescope or other optical devices to increase the signal to noise ratio at the detector. I'm not sure where that setup with a close projector, but a distant detector would be helpful, but who knows.
@maengkis 4 жыл бұрын
The lecture was very good. But I hope there is an English subtitle.
@Lephysicien1993 4 жыл бұрын
Very good lecture
@connerstevons6046 4 жыл бұрын
This video blew my mind quite a few times. This is some amazing stuff!
@polymurry 4 жыл бұрын
respect but the slids is speechless
@feriobrahmana1408 4 жыл бұрын
Does any expert can explain, is that correlated pair of photons mean the same as those photons are entangled?
@Moogli07 4 жыл бұрын
all entangled pairs are correlated. The point he wanted to emphasize is that you just need photons with correlation. Creating entangled pairs is an easy way to know for sure that your photons are correlated.
@etbassoon 3 жыл бұрын
Entangled photons are correlated, but correlated photons are not necessarily entangled. Entangled means that there is some quantum connection between the photons, like photons that are generated in the same nonlinear crystal. Correlated means that there is a known relation between the photons. Parallel beams of light from two laser pointers are correlated, but not entangled, because if you measure one beam, you know the state of the other beam.