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Thread: Rhodamine 6g & 532nm

  1. #101
    Join Date
    Jul 2011
    Location
    Maryland, USA
    Posts
    24

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    Apologies for that smily; I typed it in by hand for the effect I wanted, but the stupid server grabbed it and screwed it up.

    Should have been a colon, a hyphen, and a hashmark; intended meaning "with teeth slightly gritted".

  2. #102
    Join Date
    Sep 2008
    Location
    Boulder City, NV
    Posts
    12

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    I go to the shop and this is what I have:

    1: Coherent 599OEM orange painted dye head with 620nm OC
    1: Coherent 599OEM black painted dye head with standard OC
    1: Coherent dye circulator rack mount fornt but missing the sheet metal back cover
    2: spare jets
    3: spare standard OC
    2: spare 620nm OC
    1: misc - hoses, reservoirs, circulator water filters, misc pumps - may not be Coherent original spec.
    1: Custom circulator w/ TE dye coolers, custom pump, but no controller.

    $600.00 plus shipping for everything or best offer. I'll post pics of everything if interested. I believe that the 599s were originally $10k ea.

    jon - will hold for you if interested due to the weather - if anyone else is interested jon gets first right.

    laservideo

  3. #103
    Join Date
    Nov 2007
    Location
    SoCal / San Salvador / NY
    Posts
    4,017

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    ... 'n when yer ready to 'upgrade' that DPSS to a real 'flashlight' to pump-with, may I suggest: http://www.ebay.com/itm/Spectra-Phys...item2c529119d2 ..it'll give that 599 a proper-spanking...

    ..as-if, right? :P

    peas...
    j
    ....and armed only with his trusty 21 Zorgawatt KTiOPO4...

  4. #104
    Join Date
    Jul 2011
    Location
    Maryland, USA
    Posts
    24

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    Quote Originally Posted by dsli_jon View Post
    ... 'n when yer ready to 'upgrade' that DPSS to a real 'flashlight' to pump-with, may I suggest: http://www.ebay.com/itm/Spectra-Phys...item2c529119d2 ..it'll give that 599 a proper-spanking...

    ..as-if, right? :P

    peas...
    j
    You got that right. I can spend about $100 at a time...

    Cheers --
    jon

  5. #105
    Join Date
    Jul 2011
    Location
    Maryland, USA
    Posts
    24

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    Quote Originally Posted by lls@laservideo.com View Post
    I go to the shop and this is what I have:

    1: Coherent 599OEM orange painted dye head with 620nm OC
    1: Coherent 599OEM black painted dye head with standard OC
    1: Coherent dye circulator rack mount fornt but missing the sheet metal back cover
    2: spare jets
    3: spare standard OC
    2: spare 620nm OC
    1: misc - hoses, reservoirs, circulator water filters, misc pumps - may not be Coherent original spec.
    1: Custom circulator w/ TE dye coolers, custom pump, but no controller.

    $600.00 plus shipping for everything or best offer. I'll post pics of everything if interested. I believe that the 599s were originally $10k ea.

    jon - will hold for you if interested due to the weather - if anyone else is interested jon gets first right.

    laservideo
    Hi. About all I can probably afford is an outlet hose. My budget is extremely limited.

    Best --
    jon

  6. #106
    Join Date
    Jul 2011
    Location
    Maryland, USA
    Posts
    24

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    We have a new bottom line on one version of the question that seems to have started this thread.

    The pump laser I'm using (as I believe I already mentioned) is a 200-mW module that I got on eBay. I haven't measured the output, but the vendor claimed 200 +/- 10%. It is hiding under a TEC, which I haven't actually been powering yet -- for the moment I'm just using a small fan. Here's a photo:

    http://71.166.254.214/pictures/laser...-DPSSL.14c.jpg

    Here are the innards of the 599, with the jet running and lit, but not actually lasing:

    http://71.166.254.214/pictures/laser...nnards.14c.jpg

    (The OC is off to the right, outside the frame of this photo.)

    Here is a short video:

    http://71.166.254.214/pictures/laser...599-lasing.MOV

    (Under ordinary circumstances the dye output is directly above the residual pump light; but it is so close to the green spot that it is hard to see, so I put a prism in the beam in order to get a bit of separation.) I shot the video with my Canon G11, using the digital zoom, which I loathe and usually refuse to have anything to do with, but I wanted a larger image than I could conveniently get with camera position.

    The dye is Rhodamine 6G, out of a bottle of biological stain from several decades ago, seriously not "Laser Grade", but it does work -- I've successfully pumped it with flashlamps and with nitrogen lasers in the past. For this setup I dissolved it in a mixture of 91% isopropyl alcohol and glycerol (maybe 3:2 ratio, but I had to fiddle with it, so don't trust that), and I added a little bit of Ammonyx LO, also from some decades gone by. The solution is not optimized; I only just started to get something resembling real lasing a little earlier this evening.

    I should also mention the fact that I was running the circulator at only about 25 psi when I shot the video; I had it as high as 31 a few days ago, but then I swapped out the dye solution, and now it fusses and blows back if I try to turn it up to the suggested operating pressure. Sigh.

    If anybody wants to know whether it is possible to use a green DPSSL to power a CW dye laser, the answer is a flat Yes. Not only can it be done, I've done it.

    Cheers --
    jon

  7. #107
    Join Date
    Dec 2010
    Posts
    105

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    Quote Originally Posted by starlogic View Post
    I recently had a full medic & was told that i will live for another 40 year`s
    The taxman applauds that news...

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