Results 1 to 3 of 3

Thread: Identify/adjust 532nm Laser with power loss

  1. #1
    Join Date
    Jun 2010
    Location
    Zweibrücken, Germany
    Posts
    606

    Default Identify/adjust 532nm Laser with power loss

    Does anyone recognize this laser? It’s got a few years on it (low hours though) but it has an excellent beam profile 1mm at the aperture (<1mrad) TEM00, analog modulation, 150mW and the mains power supply is integrated in the head. Unfortunately its bin sitting for a while and if I had to guess it has about 500 hours on it (I’m the first owner) and now it’s just putting out >40mW. So before I start screwing around I thought I’d ask here first and see if anyone is familiar with this model. It wasn’t a cheapo and due to the excellent beam profile I would like to get it back up to par, it may just need adjusting. There are 2 trimmers on the PCB, probably LD current and TEC. If necessary I’d even give it a try at replacing the diode, but first I’ll check the current.

    The cavity has a sticker on it with hard to interpret hand writing, possibly 0.785A and then what looks like 17,76K (probably TEC), 150mW, 532nm.

    Any suggestions?



    Click image for larger version. 

Name:	RIMG0136.jpg 
Views:	37 
Size:	397.5 KB 
ID:	21670Click image for larger version. 

Name:	RIMG0140.jpg 
Views:	23 
Size:	455.3 KB 
ID:	21671Click image for larger version. 

Name:	RIMG0138.jpg 
Views:	25 
Size:	517.1 KB 
ID:	21672Click image for larger version. 

Name:	RIMG0144.jpg 
Views:	30 
Size:	390.2 KB 
ID:	21673Click image for larger version. 

Name:	RIMG0135.jpg 
Views:	26 
Size:	397.5 KB 
ID:	21674

  2. #2
    Join Date
    Oct 2008
    Location
    France
    Posts
    548

    Default

    it's look like an "old viasho" ..the stickers and the aluminium head make me think that.

  3. #3
    Join Date
    Oct 2006
    Location
    Central Florida
    Posts
    7,067

    Lightbulb

    I second Viasho, more on a hunch than anything else. Shoot "frank" a PM..
    Love, peace, and grease,

    allthat... aka: aaron@pangolin

Posting Permissions

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