Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: New 5 watt Laser

  1. #1
    Join Date
    May 2008
    Location
    Australia
    Posts
    380

    Laser Warning New 5 watt Laser

    Hi Guys I bought a new 5 watt laser and its got glass on the front would that do you think make the laser a little less brighter???? any ideas should I rip it off
    The Chinese are calming its dust free.....

    Also where is a good place to buy a laser meter tester anyone know cheers
    Photonlexicon FTP Server.


  2. #2
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,585

    Default

    Hi Tony.

    I guess it depends on what the glass is and whether or not it has a reflection free coating on it. If it's a decent coating and decent glass you should lose no more than 1% of your light.

    You could remove it, but I would advise caution, especially if the optics compartment is a sealed chamber. It's amazing how dust in the air is attracted to the internal mirrors, and if you're using it in either haze or fog... Well, let's just say that your mirrors will be crapped up in no time at all.

    The only way for sure to test the losses through the exit aperture is to use a power meter, both before and after the glass. That way you'll be able to measure the losses exactly rather than guessing.

    The Ophir heads that come up from time to time are a good buy as you can link them directly up to a voltmeter for the readout. Other than that there's 'Lasersbee' here on the forum that makes a nice solution.

    If you're looking for a more 'commercial' solution i've seen the Laserwave power meters and they seem pretty good. Might be worth a quick email to Bridge to ask him for a price.

    Cheers

    Jem
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001

  3. #3
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,599

    Default

    DONT take the glass off. It is likely that the laser is TEC cooled and the chamber is sealed to keep moisture out. IF you remove the glass moisture will condense on the optics and possibly the pump diode. It could mess up the beam or at worst short something out or over time rot the circuit board. Second it is likely that the glass is an IR filter and removing it will allow a substantial amount of 1064 and 808nm out the front. A pump diode to get 5W of green could leak a very large amount of IR making it very hazardous. LEAVE THE GLASS ALONE.

    Also unless you really need 5 watts of green run it at 70% or less and it will live a lot longer.

  4. #4
    Join Date
    May 2008
    Location
    Australia
    Posts
    380

    Default

    Hi Guys thank you very much for your advice I love this forum I have learnt so much here with out you guys technical experience and years of experience to guide me I would never have learnt as much as I have Its truly a pleasure talking to everyone on this forum over the years your all like my best friends that I haven't meet. Thank you....
    Photonlexicon FTP Server.


  5. #5
    Join Date
    May 2008
    Location
    Australia
    Posts
    380

    Default

    Click image for larger version. 

Name:	IMG_0180[1].JPG 
Views:	145 
Size:	1.66 MB 
ID:	38285Click image for larger version. 

Name:	IMG_0172[1].JPG 
Views:	246 
Size:	2.50 MB 
ID:	38284Click image for larger version. 

Name:	IMG_0172[1].JPG 
Views:	246 
Size:	2.50 MB 
ID:	38284
    I have attached pictures for you to look at....
    Photonlexicon FTP Server.


  6. #6
    Join Date
    Jun 2011
    Location
    GuangZhou, China
    Posts
    273

    Default

    ....
    5 laser modules...?
    L.A.S.E.R.
    Light Amplification by Stimulated Emission of Radiation

    Laser system: Pure Diode 3W & 6W RGB Laser.



    www.facebook.com/saifer.sy
    www.laser-viva.com

  7. #7
    Join Date
    Jun 2010
    Location
    Toronto, ON, CANADA
    Posts
    57

    Default

    5 laser models in cheaper units is quite typical. This is what Goldenstar does for their $2,000 5 watt RGB projectors.

    This one looks like 2x500mw 638nm = 1 watt R, 1x532nm = 1 watt G, 2 watt + 1 watt 445nm = 3 watts B. Total = 5 watts. Not balanced, but cheap. You can get these with analog mod & 25K for as cheap as $1,600 + shipping right now.

  8. #8
    Join Date
    May 2008
    Location
    Australia
    Posts
    380

    Default

    yes that's correct
    Photonlexicon FTP Server.


  9. #9
    Join Date
    Nov 2009
    Location
    Whanganui New Zealand
    Posts
    312

    Default

    Hi Tony,
    My canton laserphoto laser came with a window. I noticed a lot of light reflecting off the window and going back into the case.
    What worried me is that at times light could be reflected back to the diodes.
    We purchased an edmonds optics 2"x2" ar window. It wasn't that expensive however with freight it was.
    When I pulled the old window out I found out that it was in fact just glass.
    The new window reduced back reflections by about 80% ( No power meter).
    The new window (when viewed on certain angles) has a slight colour.

  10. #10
    Join Date
    Mar 2006
    Posts
    2,478

    Default

    While a Brewster window is specific to wavelength, I imagine a lot can be gained by using some kind of angle so long as it doesn't waste a lot more in reflection than it helps in passing.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •