Fiber Laser ⚡ 200 kW Peak Pulse Power! 

erm ... better don't get used to it, but ... I might have another one ... how long do you guys need to recover from this one?

Weiste bescheid XD Hallo liebe Kinder, wir reparieren heute einen Pulsfaserlaser: Dazu braucht ihr: Klebeband, Wäscheklammern und natürlich eure Sicherheitssocken!

The circular things are slanted just to keep the input and output plane aligned with the board with the pegs, yet providing space for the correct length of rolled up fiber. This part of the machine must not tilt the fiber to much, thus giving the engineer two choices. 1. Build it linear (and end up with several meters of machine) 2. Roll it upp neatly somehow and dont mess with the axiss.

Remember kids, don't look into the laser with the remaining eye... ;-)

That sound effect around 9:25 made me flinch.

Fantastic video. I’ve worked in optical communications test & measurement for 20+ years and always wanted to see the inside of an EDFA to see how they work. Thank you for taking the time to explain your findings. Can’t wait to see what fun you have with it.

You always make really interesting videos. It's also always very educational!

Your "Way more powerful" diode bars are nothing compared to good fibre lasers. The beauty of these things is single mode spatial output (pulse characteristics are also nice but not as unique) that lets you focus down to micron or less spot sizes. The relative increase in intensity due to this dwarfs anything big multiomode emitters such as a diode array could ever achieve with their limited focal size. All that said this looks like it may not be strictly single mode fibre, should have got an end view shot of the output fibre from the splicer (the fact that you can change the mode shape by adjusting the fibre position indicates this). If that is the case any incorrect bend in the high power fibre section will decrease or even destroy your beam quality. Alternatively the output cleave / AR coat before the isolator might be bad. Also the copper tape is likely just a beam dump for unwanted low power light.

So relieved to see these videos. Was worried we lost you. Dang, you are one talented guy.

Seeing this video made me happy, and I had a feeling of nostalgia because I used to be a fusion splicer. Worked in fiber optics for a couple of years. I built all kinds of amazing devices.

Marco, you have been a huge influence on me getting into lasers over the past year. Now my electronics lab it littered with jenoptik and coherent laser modules purchased off eBay… All in different states of working or disrepair. I know it’s been a tough year....And I know you’ve been busy. But we could really use laser content right now. It doesn’t matter if it’s really advanced or really basic beginner stuff… we will be happy with anything! … but since “ Tech ingredients“, “styro pyro”, “zenodilodon,” and “ thought emporium” haven’t produced any laser content for months… We could really use your laser content to take our minds off the shitty year of 2020. Hope you are doing well!

This is one of the greatest things on this channel. Im waiting for part 2

Good job Sven.

An amazingly audacious project given how complex and specialized these are. I used to do electronics for an EDFA company, but looks like you already know more than me about it at a system level.

really a nice work, ty for sharing it to us!

Wow... Pretty impressive piece of equipment! 😮 Fantastic work!

3:05 "Weißt'e bescheid.." 😂😂🤙🏼❤

I was just re-watching a couple of your videos today and wondered when there would be an update to the laser projects. Excellent timing!

Wow!!! that was the coolest video of seen in a long time😁

The Fitel S184 is a 3-phase arc fusion splicer, the first of its kind anywhere. It can accurately splice fibers up to 1200 micron diameter.

Just found your channel. We just fired our EOS 290 DMLS for the first time. 400 w Fiber. Great channel.

Echt guter Video, fast Akzentfrei, gute Qualität- Respekt!

Can't get enough of your videos. I'm still stuck trying to master arduino. With practice, I will become 1/10000000 as capable as you.

12% concerned - I love it!!

omg. i had a great satisfaction. thanks

stay tuned. i love this guy

Was watching another vid, but that lazer vid goes first!

That splicer is epic

EPIC VIDEO!!!!!

An excellent reverse-engineering demo! I love your dry sense of humor; and I would love to visit Hanover, Braunschweig, Shoningen, Helmstedt, and Augsburg again. Ooh, and skiing in Garmisch! :)

pure awesomeness. and the ADILETTEN :P hellyes

Waw, nice equipment and a very interesting video !

Marco messing with industrial god level things, using industrial god level terminology and achieving an absolute god level at repairing and understanding marvelous machinery. And I don't even believe in god.

Oh yea, that's a laser! They are quite complex units when you get into laboratory and telecommunications. I 100% feel you on this video as there are lasers of which my biggest fear becomes accidentally sneezing around. Just got in an Ignis 670nm DPSS and I am hopefully going to be getting a third harmonic generation 355nm OPSL soon to play with!

I used a very similar model arc fusion splicer years ago when I was working for one of the major cell phone networks, splicing fiber in some specialty systems for big clients that required cell nodes on site. Those are some amazing machines. I never could figure out just how it manages to actually measure loss in the splice without sending any light through the cable. I guess it just evaluates the image from the cameras.

2 videos in 2 days, nice!

11:40 I said WOOW to my self.... and just a couple of seconds later you said, "Woow beautiful"... Yap I feel you bro!

My Prof at the collage is the leader of the laser centrum Hannover lol 😂

I feel a little blue balled not finding out the solution. Here's hoping there is another video in the pipeline shortly with an update.

YES! Another laser video!

"pew pew chust yet" I don't know why, that just made me laugh out loud...

Absolutely fascinating video, the broken guitar string sound made me laugh!

I wait so long for these videos and i cant even lie about being excited hold up im ganna get a drink

Too high to watch this- love you Marco reps

Asombroso! Saludos desde México My friend!!

You are insane!!! No way I would have attempt to touch that thing!

Fusion splicing makes my days of doing hot melt in the 90s look like performing brain surgery with rocks and sticks.

I'm waiting for the next part :)

These videos are very interesting.

Cooler Humor und Stimme 👍

Very fun! Finding that schematic must have really made your day. Where did you find that broken laser?

Definitely misaligned output head. You can bend single-mode fiber in reasonable ways without affecting output shape. You can buy new Chinese output head, and splice it there in place of old one. Re-aligning it is extremely challenging.

you've really become a laser-fan over the time. Great self-educating, take it from a laser-pro ;-) ... enjoy! ... I have plenty of short and ultra-short pulsed lasers in my lab but I've never considered a CPU femtosecond system at home.... at least not until the kids are old and responsible enough :)

After i have seen a professional fiber splicer (Person, not tool) handle naked (Bear in mind, the fibers you are touching are still insulated by plastic) fibers i don't worry as much about fiber handling anymore. Its surprising what fibers, especially single mode, can withstand.

Very interesting. THX³

"It's not a very powerful unit that piece of paper still exist" I'm definitely going to use that phraise

1:35 Der Auskoppelkopf besteht aus Isolator, der eine Rückreflektion ins Gerät verhindert und einem Kollimator, der die Divergenz/Konvergenz des Strahls beeinflusst. Vorne dran hast Du eine Aufweitungsoptik, die den Strahldurchmesser vergrößert, damit die Leistunsdichte auf den nachfolgenden Optiken kleiner wird und sich die Fokusqualität im Bearbeitungspunkt verbessert... 3:37 sollte ein AOM Switch, Q-Switch oder Güteschalter sein...

I love you. Thanks

Really cool stuff. I need a fusion splicer, let’s buy that.

thank you for this video, I am researching fiber laser and this is the 1st time to actually find an illustration with the actual hardware not just drawings, about these fiber laser schematics you mentioned at the ending is it available online, sir?

Where do you find all these lasers? I regularly search ebay and the most exotic thing I've come across was a range finder from a British tank. I think it had a pulse power of 20W or so and I doubt I'd be able to make use of its original functionality since the military propably doesn't publish manuals for their tanks online.

I can feel this mans excitement from his voice alone.

Ach man ich dachte als nächstes kommt mal was zu deinem Spindelmotor mit dem Werkzeugwechsler, das Ding find ich mega interessant!

Ich kann dir vielleicht helfen wenn du was mit atto lasern machen willst. Ich studiere an der Uni Freiburg und wir haben aktuell zwei Experimente aufgebaut die phemtosekunden laser Pulse erzeugen. Die gehen aus von PIKO Sekunden pulsen aus und Regen ein Gas an um atto pulse zu erzeugen. Haben dabei aber nur eine Wirkungsgrad von 1*10^-6 :D. So weit ich weiß ist das aber die bis jetzt "einfachste" Methode Ein Kollege mach jetzt seine Bachelor Arbeit an dem Experimente. Wenn du also weitere Fragen hast melde dich.

Was nen zweites Video innerhalb von 24H?! Ja Moin Kollege wasn da los :D

and here i am missing my 200mW handheld red laser from 10 years ago which i lost a couple of weeks ago... and then there is this guy and his toy

Ah man, uploading two videos after midnight? I wanted to go to bed early today..

Oh I just happened to find a hadron collider collector grid plate with the controller interface intact and thought i would share. Yah betcha. Where's my spare proton accelerator so i test its inputs?

This video is like engineer porn!! LOL Great video and very well done to you my friend. Have Fun, Joe

nice background music kingping Game soundtrack :)

I don't understand like 98% of your videos yet I still enjoy them, what's your bg? EE?

I like the new Windows Test Voice

‘What a unit’

Never I'm my

Hervorragend gemacht Marco, wieviele Stunden waren das?

Perhaps the output head is also misaligned? You're lucky that this laser doesn't use the output fiber and head as part of the "resonant cavity"(ish). I believe some IPG lasers do that, in which case cut cable = paperweight laser, even if you manage to splice it back together.

Less lazing more milling... I want to see chips!!! Metal being pealed back with nanometer precision.. on a side note you should outfit your 3d printer with clearpath servos and an stm32 controller.

Very interesting, and scary.

It's been 2 years and I'm still waiting for another laser video lol

awesome:D

15:18 ITS A DISCORD BLIP! i was sure it was on my side, i check 4 times discord..

I really hope that wasn't a surface plate at 0:40 :( Very interesting stuff!

Yay!

Please, if you have time, do a stand alone video about the Sumitomo device. Ow, ok you already planned that. Thanks in advance then. :)

You could try cleaning rust off metal like those super expensive laser based rust removal guns.

Hahah I'm dead. Pew pew. Coherant knows your location!

marco i love you please carry my young

You sound like a good candidate for an evil world dominator on a future James Bond film.

That little copper thing tightened to metal bench looks like beam-dump. They are used in lasers to dissipate excess light energy into heat.

Loved this vid. Brings back a lot of memories for me, as I used to use the Sumitomo splicers at work (Nortel 1999-2001, then Bookham's). I think there was a connection between Nortel or Sifam and Oclaro? (makers of the pulsed laser in yours). I used to do splicing for building EDFA (Erbium-Doped Fibre Amplifiers), which would have worked in a similar way to your laser, but nowhere near as high a power. lol That laser lab in Hanover looks awesome, too. Kind of wish I still worked with lasers. I have two 50-70mW Argon lasers collecting dust atm.

Forgive me if you figure this out later in the video. I think the dead-end fiber taped to the plate is for static dissipation. This is a complete guess, but why else would they use conductive tape if not to conduct?

As the Joker once said; "Where does he get those wonderful toys?"

Evil Mad Scientist level unlocked!

sehr Gut: Nice job. Where can I get a Laser to cut 2-3 mm steel transformer silicon iron sheet? would attach this laser to my CNC router or Plasma cutter

15:19 thanks for making me flinch

15:05 you funny, they didnt design to fix it yourself :-) im not sure if i can find one of 10000 who would go trough on this journey youre awsome, and wish you start a biz these lasers dumped on the market and you could start right away a million dollar biz.. some of them stops working within weeks, what i guess only user error, but still could be fixed.. thank you much for your time to make this video

du bist echt nen elekronik brain :) der knaller ! ...weisste bescheid :-D

Sooooo kewl

11:55 If measured by an OTDR, most likely that fusion would have like 0.3 or so dB loss, the fusion got a little "line" on it, which means it's not perfect (though it could pass, sometimes with a bubble the signal passes better than when it is a perfect fusion, so... who know, only an OTDR can tell) Sauce: Work in telecom, splicing fibers

Thumbs up on the company helping out , you dont see that much any more ..