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Thread: Disk Laser

  1. #1
    Join Date
    Feb 2019
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    Default Disk Laser

    Hello.
    I got a scrap disk laser about 6kw that has some missing parts.
    Do you know something for these types lasers ?
    If i see ok from photos there are missing some pumping diodes... can a laser like this work with missing pumping diodes ?
    Where can i find used/economic such type pumping diodes ?

    Also what more i need to operate this type laser ? optic fiber & cutting head with focusing lens ?

    (It is on transport now in 2-3 days will be in my hands)
    Attached Thumbnails Attached Thumbnails 1.jpg  

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  2. #2
    Join Date
    Oct 2012
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    Germany
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    Default

    ... my experience with a disk laser (some 15 years ago) was with a 20Watt type, which was pumped by a 60Watt IR-diode-laser -- the energy was simply "injected" with an FSMA fiber head into the rear of the disk laser housing.

    When inspected the disk laser, it was simply a maybe 3mm thick window/disk in the resonator chamber, which was side-pumped by the IR-light.

    So, depending on the resonator setup and Q-switch or other modi, missing diodes would only reduce the output energy ... but should be working, if no other issues ...

    Viktor
    Aufruf zum Projekt "Müll-freie Meere" - https://reprap.org/forum/list.php?426
    Call for the project "garbage-free seas" - https://reprap.org/forum/list.php?425

  3. #3
    Join Date
    Feb 2019
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    34

    Default

    Disk lasers have efficiency up to 30% so 60w diode to output 20w is very logical it is a little more than 30%.
    Can pumping diodes used on it's own as diode lasers ?

    Have disk lasers some disadvantages/advantages against fiber lasers ?

    When i receive the laser i will post photos & more details..

  4. #4
    Join Date
    Oct 2012
    Location
    Germany
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    Default

    ... I've used fibercoupled pumping diodes from IPG-fiberlasers with powers of 5, 9 and 25Watt out of a 105µm fiber for engraving. The spot is best around 0.12mm with 20mm FL ... so yes -- is usable is some ways.

    Have other pumping diodes with up to 200 Watts on a spot of 0.2mm, what's another "world" -- they even can cut wood or metal sheets

    Here a thread with some more related infos (see around page #8 for the diodes) - https://photonlexicon.com/forums/sho...ng-and-marking

    Viktor
    Aufruf zum Projekt "Müll-freie Meere" - https://reprap.org/forum/list.php?426
    Call for the project "garbage-free seas" - https://reprap.org/forum/list.php?425

  5. #5
    Join Date
    Jan 2015
    Location
    switzerland
    Posts
    62

    Smile Disk laser

    Quote Originally Posted by javanam View Post
    Hello.
    I got a scrap disk laser about 6kw that has some missing parts.
    Do you know something for these types lasers ?
    If i see ok from photos there are missing some pumping diodes... can a laser like this work with missing pumping diodes ?
    Where can i find used/economic such type pumping diodes ?

    Also what more i need to operate this type laser ? optic fiber & cutting head with focusing lens ?

    (It is on transport now in 2-3 days will be in my hands)
    Hello jawanam,
    nice Disk laser ! Yes the laser can work with missing laser pump diode. I think the best is to make a complete module with other missing diode module.
    I have pump laser diode if you are interested in a dill with one disk module ?

    Goto my webside laser Disk http://www.swissrocketman.fr/085-yb-...r,fr,3,321.cfm

  6. #6
    Join Date
    Feb 2019
    Posts
    34

    Default

    You have the bigger lasers collection in the world as i see in your channel in youtube.
    Very impressive...
    I have also some of the lasers you show in your channel mostly CO2 (rofin scx30 / synrad57-1 / synrad48-2 / coherent gem30 / gem50 / coherent matrix / coherent versapulse / ipg pyl-50m / trumpf vmc4) not all operational
    I got 2 same disk lasers to have replacement parts for other laser. I don't know why these lasers are scrapped probably are defective.
    I will follow with photos/details when receive them..

  7. #7
    Join Date
    Feb 2019
    Posts
    34

    Default

    Ok arrived.
    They are 2 identical trudisk lasers one has more diode pumps and outputs than other
    and in one laser are missing 2 dps2 pump diodes power supplies
    one laser has 8 diode pump power supplies and the other has only 6 pump power supplies probably the other 2 power supplies lost at transport.
    So my question these lasers will work with less diode pumps and less pump power supplies ?
    Also what optic fiber / cutting head / focus lens needed (1030nm) ?

    Some photos..
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    Last edited by javanam; 11-25-2020 at 08:05.

  8. #8
    Join Date
    Oct 2012
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    Germany
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    Default

    ... if you can't find optics for 1030nm, then you can try with common 1064nm-lenses and mirrors, if they'll survive and work as expected ...

    Viktor
    Aufruf zum Projekt "Müll-freie Meere" - https://reprap.org/forum/list.php?426
    Call for the project "garbage-free seas" - https://reprap.org/forum/list.php?425

  9. #9
    Join Date
    Feb 2019
    Posts
    34

    Default

    Iam searching economic optic fiber LLK-D 200um .
    The laser is compatible with this type of fiber.

  10. #10
    Join Date
    Feb 2019
    Posts
    34

    Default

    In the red circled fiber output connectors writes 100
    What means this that the fiber cable must be LLK-D 100um ?
    Exists a compatible optic fiber with LLK-D ?
    Cutting head needs some special coupling with LLK-D fiber ?


    The lasers have a 4kw water pump and water reservoir tank but no chiller.
    What chiller will be ok ?
    30kw electric power / about 7kw optic power so the chiller must cool 23kw thermal power.
    Attached Thumbnails Attached Thumbnails IMG_20201124_211013.jpg  


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