High Power Diode Pumped Laser
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- čas přidán 25. 07. 2024
- A "Z-Fold" high power fiber coupled diode pumped Nd vanadate laser. A description of the design of this particular laser and general discussion of the considerations that need to be made when constructing this class of laser. Demonstrations of power output, beam quality, and the layout of the laser optics is shown.
- Věda a technologie
This is THE MOST informative video for a dpss green laser I have found after much searching. Great job and beautiful work!!
Another great video...and what a lovely beam!
I like the fact you built it yourself. Anyone can just buy one.
Nice video. very informative
Great Work!
Please do an update on this project. I'm curious to see the progress. Thank you for an interesting video!
Please do
Do you know where I can learn how to do what you did here which is to configure the intracavity optics to generate an ultra low divergence beam w/o using extra cavity optics.Thank you for excellence.
some documents detailing the schematic of this system would be highly valuable for us(individual experimenters) in replicating it.
Nicely done!
Thanks!
Fantastic.
Thank you great job
Why not get the other colors by designing an OPO? I'm fascinated by the physics of the nonlinear crystals and photonic crystal fibers used in these
Like it. Those who did not like your video are envious snobs.
With the increased subscribers, I wonder if it could encourage you to clean up the audio and repost this. I think some of your older laser video is worth watching but the background noise make the speech hard to comprehend especially for non English audience :)
This is exactly why i'm so in love with my big old Spectra Physics HeNe Laser.
Beam quality not from this world ....
Power is nothing without a good beam quality ... (as the 7 watt multi mode blue laser LED's)
That beam width reduction Is amazing.
Thanks!
@@TechIngredients No problem, I dream about owning a laser of that collimation level for 3D animation laser displays, It would be amazing. :@)
You should make a auto focus liquid lense with laser optics
I'm going to make some new technology once I can afford it, I have alot of ideas, you know the old tvs use a plasma ring to make the beam go faster
808nm filter before output?
Nice!
Excellent
Planter could make a great video explaining the finer details! He boosted 64 watts in the follow up High-Powered Laser video here..
how much pump energy are u using
So why was a fiber coupled pump used? Would this be better suited than a diode with wider emitter & shaped with prism pair and meniscus lens? I've gotten solid gains with the aforementioned, though im curious if there is still a better way. Nice work BTW, that thing is *HUGE!!* Regarding "copper is difficult" dont forget brass! Aluminum is easy but has a greater thermal expansion coefficient. If used in optical mounts and there is shift in temps during operation, you run into issues otherwise not seen when brass is employed.
+TunedCavityLasers start at 13:00 for explanation
Brass also has only 30% of the thermal conductivity of copper, so it does not transfer heat as well.
Where did you purchase your mirrors for this?
Ur good sir pretty impressive
Thanks!
Beautiful project. Pick yourself up a HPS greenlight system. 120W 532.
Take another look, we have one.
If you were required to initiate an electromagnetic field around a pumped phase conjugate mirror, would you do so through manipulating the wavelength of the lasers or simply by adding a coil and generating a separate magnetic field? Thank you sir.
You would manipulate the field itself.
@@TechIngredients As in the laser field or the media field sir?
The media.
@@TechIngredients Thank you sir.
Did you ever get around to Raman shifting the output?
I did, but never posted a video on the project.
Wouldn't this laser be right in the range needed to measure the distance to the moon using the corner reflector left during the Apollo missions? Not sure if a diy'er has ever pulled this off but it is one of my bucket list items.
Probably not.
A pulsed YAG laser without the doubler would be better. The IR wavelength would be less affected by the atmosphere, and the high peak power pulse would be easier to detect and time the two-way journey.
Can u design beam for using diamonds cutting
thank you sir! 4 to 6 times better convergence of typical 1 MRAD? ….well cited 1MRAD from china. Very interesting video.
Was the crystal polished? Does it make a difference sir?
Yes. It is optically flat and coated for low reflectance at 1064nm and 532nm.
@@TechIngredients Thank you sir.
sir, what is the estimated cost for parts needed for this project?
My guess would be around $ 2,000 if you were starting from scratch. We have a pretty extensive inventory of components accumulated over the years and so it cost us less.
@@TechIngredients ive always wanted to make a powerful green laser from 808nm source. excellent craftsmanship you've possessed. i wish you were my science teacher in school :)
the really insane thing is that they now sell, in a convenient non-technical consumer friendly package, 10-20 watt CW averaged DPSS lasers, usually in easy-to-maintain performance levels of a few hundred nanosecond pulsed operation, for a few hundred dollars, completely turnkey witht power/control. You can get even better deals if they are flashlamp SS and the cost of the lamps is dirt cheap as well. Thank all those laser hair and tattoo removal strip mall locations for driving the demand. And in terms of the mass production, Its true that this occurs in China, but its incorrect to assume that its a cheap commoditization effect like in other areas. China has maintained a surprisingly strong laser industry for a long time, in some ways "predating" the explosion of the last 20 or so years. For a long time Chinese companies were the only source of nonlinear optical crystals needed to do upconversion into the deeper UV around 200 nm or less.
Your numbers are a little off. 1-2 watts maybe, or a few thousand for 10-20.
Flashlamps are dirt cheap?
Hope it works out.
@@TechIngredientsGreat video as usual.
I too was shocked when I looked last week at YAG laser. There were about half a dozen professional and the same number of budget brands of flash lamp Nd:YAG tattoo removal lasers available from China with prices starting from US$400, the water cooled laser head is available as a spare part for US$150 which I thought was the price of the laser rod alone. Just a few years back I saw nothing at these prices.
The complete units come with an inline crystal holder to get 532nm. All of the units provide a raw beam of about 4-6mm but seem to have a rear reflector. Not very high quality but a great source of parts for DIY experimentation.
Some also have another attachment that is said to provide 1320nm but I don't know how that is done unless it is a second laser crystal, do you have any ideas on what trick they are using?
A wireless lapel microphone would be nice 🙂
You're right!
We have been using them for the last couple of years.
Fast forward to 2023:
100 watt nichia array for $600
We're currently building a 500 watt laser.
Alright, Here is my deal.
I am a cnc milling guy, before that I was a cnc service tech, and before that, an auto mechanic. That is me in a nutshell.
My business would benefit greatly if I can laser etch and anodize titanium.
I know too much about machinery to pay the prices these people are asking.
I want to make my own.
I can build a cnc gantry, but I know absolutely nothing about lasers.
From what I can tell I would want something like 50 watts to at least to engrave titanium, and maybe cut some other metals.
Where can I learn how to pump focused light down a fiber to a tip that can move?
I'm not laser expert, but Sam's Laser FAQ is a good place to learn a lot of basic concepts. There are lots of DIY kits and guides here on youtube and elsewhere online for building CNC laser cutters and engravers.
www.repairfaq.org/sam/lasersam.htm
*"commercial lasers up to 2watts"* :D he meant 2kW right
No, I actually meant 2watts, but I was talking about a particular market of relatively inexpensive Chinese DPSS lasers that are frequently used by laser projector manufacturers and DIY builders. 2kW is about right for the largest state of the art DPSS lasers available if money is no object.
After seeing 60kW laser in the U.S. navy its hard to be impressed by 2W.
Fair enough, but with a billion dollar budget they better be producing enormously higher powers. Personally, I am not impressed with what the weapons laser programs have achieved so far. Nevertheless, of all the branches of the military, the Navy is the most likely to deploy usable systems when their free electron, ship based lasers cross the megawatt threshold. Thanks for your service...and I mean that.
Can you please translate in English? 😵💫🤯
thank you for the videos, but something to consider ! you can turn the pumps and fans off !
you videos are way too nosiy when it is not needed ! i know when you are operating them, for demonstration, they need to be running, but rarely you show their operation ! watching a double digit 0 on the display has no value, not to forget the sound of fan is so anoying !
maybe there are some device that takes time to be operational and needs the pump to run for a long time, hint, you can film the operation first, then turn off the pumps and fans, for the main video and talks, and in editing you can switch the order.....
Room full of shit to see a small dot of light on a paper...(slow-clap)
If the principles and the physics are not interesting to you then check out our video "Playing Around With High Power Lasers". Cutting steel might get a faster clap.😀
Вы дурачки? зачем защитные очки камере? думаете мне глаза через монитор выжгет?