Fiber Laser ⚡ 200 kW Peak Pulse Power!

Click here for 2 months FREE Skillshare skl.sh/marcoreps11
Keithley 2461 Power SMU www.tek.com/source-measure-un...
Laser Zentrum Hannover www.lzh.de
Certainly not a fiber laser bit.ly/2Opc2V5
7 1/2 digit Keithley DMM www.welectron.com/Keithley-DM...
Patreon / marcoreps

[@reps]

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?

[@RubixB0y]

Are you kidding?! There's no such thing as content saturation with your channel :)

[@anononomous]

I mean, might as well go for the 3 in 3 days hat trick now.

[@leisergeist]

There's no such thing as too much content here

[@wuddadid]

I expect it by end of day

[@v4lgrind]

Going to bed now, so let’s say 8h?

[@marwinthedja5450]

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

[@EDLEXUS]

einfach mehr Gaffa rum und dann wird das schon gehen...

[@SpeedySnuffy]

Stahlkappensocken*

[@Sv443_]

Bruder muss lasern

[@user-fk5ug5wh5c]

@@EDLEXUS PANZERBAAAAAAND!

[@jenzbrettschneider8838]

Schrumpfschlauch hilft auch

[@Thingsthatgopew22]

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.

[@aterack833]

WGwireless would the word axi fit there?

[@samalbury9183]

The idea is to counteract the axial twist formed when coiling? I wonder if forming a figure-eight, like a faked rope, would allow a design without a tilted section.

[@sealpiercing8476]

That sound effect around 9:25 made me flinch.

[@peter47a]

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

[@foopo5004]

well shite thats my plans of staring at a laser thatle blind me imeiately for the weekend gone

[@Canetoady]

@@foopo5004i didn’t understand what you said

[@NicholasMaietta]

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.

[@jackflash6377]

Same here. I was shocked to see the splicer that I spent so many hours hunched over in the van. Brought a smile to my face.

[@danpayerle]

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.

[@MarionMakarewicz]

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

[@hullinstruments]

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!

[@MrMilarepa108]

Hey that sounds like you could produce some fantastic laser content for us... why don't you make some?

[@wpigot]

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

[@MCsCreations]

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

[@TheMati117]

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

[@billcodey1430]

Good job Sven.

[@Matlockization]

His name is Shven.

[@alberthofmann420]

Tzwehn...

[@douro20]

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.

[@NGC1433]

1200mm? That's oil industry suff, not fiber optics.

[@douro20]

@@NGC1433 Pardon me...1200 microns.

[@RockyPondProductions]

You still need a cleaver to cut the fiber. Possibly 2 depending on the spice. Active fiber is octagonal in shape and needs a special cleaver. Other splices like the pump combiner use simpler cleavers/splicers

[@StefsEngineering]

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!

[@SamuelLegge]

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.

[@JannisDesigns]

3:05 "Weißt'e bescheid.." 😂😂🤙🏼❤

[@dancevideo2]

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.

[@deepserket4390]

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

[@Zi7ar21]

That splicer is epic

[@JoshWeaverRC]

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

[@keithking1985]

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

[@DrakkarCalethiel]

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

[@9uuuu]

2 videos in 2 days, nice!

[@AppliedMetaphysician]

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! :)

[@reps]

Skiing sounds good, but big cities are not really visit-worthy 😅

[@Markfps]

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.

[@ralsjel]

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

[@SpeedySnuffy]

😂😂😂

[@RealNovgorod]

Well, it's not the MPQ, of course, but probably the best that Expo-and-urine-city Hannover can do.

[@synchro505]

12% concerned - I love it!!

[@PhG1961]

Waw, nice equipment and a very interesting video !

[@firuzpulatov7750]

omg. i had a great satisfaction. thanks

[@brent19731]

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.

[@cherrybacon9790]

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

[@maxxxy910]

EPIC VIDEO!!!!!

[@LanceThumping]

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.

[@BarsMonster]

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.

[@Zenodilodon]

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!

[@tgirard123]

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

[@prinztom8652]

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...

[@LiquidAudio]

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

[@DarthBlazer.]

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

[@KYBERWERK]

YES! Another laser video!

[@IvanEngler]

pure awesomeness. and the ADILETTEN :P hellyes

[@balkandivision3827]

stay tuned. i love this guy

[@TheShutterNinja]

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

[@GlennHamblin]

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

[@sss-tw3jh]

Too high to watch this- love you Marco reps

[@BigManko]

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.

[@ronniepirtlejr2606]

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

[@BEdmonson85]

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.

[@MrGilbert1995]

I'm waiting for the next part :)

[@0ADVISOR0]

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

[@LachlanMoss]

These videos are very interesting.

[@ramongaonacncgdlmx124]

Asombroso! Saludos desde México My friend!!

[@janisreinberger7724]

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.

[@DrakkarCalethiel]

Janis Reinberger Same for large caps...

[@AKAtheA]

I assure you those old flashlamp driven rangefinders can easily do over 1kW pulsed output...but they're not designed for high repetition rates.

[@MrFaaaaaaaaaaaaaaaaa]

With used high tech stuff it's all about who you know. You can get crazy expensive broken or old stuff for free if you know the right people.

[@2BiggUS]

Hervorragend gemacht Marco, wieviele Stunden waren das?

[@fehlerstromalex]

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

[@Heisenberg2097]

Very interesting. THX³

[@fernandopenah]

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

[@acompletelynormalhuman6392]

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

[@heshammansy1585]

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?

[@Sloth_and_Badger]

Cooler Humor und Stimme 👍

[@Spirit532]

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.

[@vb2010helper]

Off-Topic: Are you Spirit532? Ex staff on UC.me?

[@JustinAlexanderBell]

Why is that the case?

[@OddWorlderer]

I can feel this mans excitement from his voice alone.

[@4560123678]

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

[@elielbourrelly9902]

That made me recoil in pain... these things don't deserve such treatment.

[@Tobias-dp7xh]

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.

[@JosipMiller]

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

[@TheDefpom]

Very interesting, and scary.

[@friedtomatoes4946]

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

[@catsnotcops_]

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

[@electronash]

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.

[@ferrumignis]

Bookham became Oclaro and was recently bought by Lumentum (one of the two companies that JDSU split into). I started working at Nortel in the late 90s, good times!

[@DirtyRobot]

I actually loved it when the screen blacked out. Felt like a mini nuclear explosion.

[@electronash]

@@ferrumignis Ahh, that was it. Bookham changed it's name, thanks. ;) One of my lasers is a JDSU, but with an NEC head. Which Nortel did you work at? In the UK or elsewhere? I was at the Paignton one. #doxxed

[@ferrumignis]

@@electronash Paignton site, it's been leveled and shopping center built on top of it now. Shame, as it was a really interesting place with loads of history, did you ever get to take a look around the sub-floor? It was STC before Nortel, and as a defence contractor it was built to withstand some serious punishment.

[@electronash]

@@ferrumignis I think only briefly saw the basement. I worked in Passives in L-block originally, between the smoking hut and duck pond. lol Then at Nortel House for most of the second year, when I started on EDFA. Splicing was good at first, but it did get very boring very quickly. It was that strange time when everyone knew the site was about to close, but we still had to make it look like we had some work to do when people were visiting. Very bizarre. Also did a stint in fibres in S block with Bookham's. And yeah, they've just built a new "Range" shop there, or something. Shame to see the old site gone, as there were all sorts of rumours of companies like Microsoft buying it.

[@randfee]

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 :)

[@wilman_studio]

‘What a unit’

[@UNVIRUSLETALE]

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

[@mrkilla1990]

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

[@AtomkeySinclair]

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?

[@KonuralpBalcik]

nice background music kingping Game soundtrack :)

[@minecrafter9099]

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

[@chain3519]

I love you. Thanks

[@michelfeinstein]

Could you share more of what you have learned?

[@receb]

I like the new Windows Test Voice

[@josseman]

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

[@FNGecko]

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.

[@hubzcaps]

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

[@jjab99]

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

[@Psi105]

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

[@Some_Beach]

Yay!

[@kilo3421]

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

[@hanswurst3811]

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

[@meshi250]

Hi Marco don't forget to give us an update of the CNC mill

[@reps]

k

[@rethling4904]

marco i love you please carry my young

[@ChrisMuncy]

Evil Mad Scientist level unlocked!

[@tissuepaper9962]

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?

[@nomen_omen]

awesome:D

[@TheEvalChicken]

@Marco Reps wann kommt wieder ein CNC Video ?:D ich finde die Mega Cool :D

[@rustymetaII]

you could have square pusher playing in the background

[@ynnebbenny]

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

[@Sven_Hein]

Vielleicht sieht man sich ja mal in Hannover.

[@Evergreen64]

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

[@bobreichel]

Just wondering do you fix fiber lasers? I have a 30w and the laser got weak and then stopped working. I don't know if your in the US or not. Anyway just asking.

[@waitemc]

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