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Thread: Dreamlaser SDL-532-100T Review

  1. #1
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    Default Dreamlaser SDL-532-100T Review





    The Specs :

    Model SDL-532-XXXT
    Output Power @ 25 ℃ 100 mW
    Wavelength CW 532nm
    Operation Mode TEM00
    Linewidth <0.1nm
    Linear Polarization >100:1
    Beam Diameter at the aperture <2mm
    Beam Divergence (1/e2, Full Angle) <1.5mrad
    Power Stability after warm-up <1%, <3%, <5% (over 2/4/8 hours)
    M2 factor <1.2mm
    Warm-up time <15 minutes
    Dimension of laser head 102 x 39 x 39mm
    Power Supply SDL-PS-200
    Input Voltage 85~250VAC, 50/60Hz
    Beam Roundness >95%
    Modulation TTL Modulation >5KHz or analog Modulation >2KHz
    Operating Temperature 10℃~30℃
    Dimensions of power supply 174 x 75 x 40mm
    Expect life time 10000 hours
    Warranty time 1 year

    First impressions. (Laser head)



    This is your generic style laserhead.
    Fan on the back side cooling the heat sink that holds the peltier element and the diode.

    The laser head looks very clean and was very well machined.
    No sharp edges or unpainted metal.
    The Dimensions of the head are 102 × 39 × 39mm

    Also something I noted in the specs.
    Is that Dreamlasers actually makes a note of the residual ir coming from the laser.
    This says something about the quality of the laser and ir filter.
    And the company being very precise with the specs.
    Also I was informed by Dreamlaser that this test model does 150mw
    And that was exactly what it is doing after warm-up.

    First impressions. (Driver)





    It’s kind of big (175 × 75 × 40mm ) for a dpss driver these days.
    But keep in mind the power supply is integrated into the driver
    The Driver accepts any voltage between 90 and 240 volts.
    The driver has its own power switch.
    The blanking input can handle up to 20Khz TTL
    However analog modulation is optional.
    Also it has a soft start feature.
    So don’t be worried when your laser does not turn on immediately.
    The laser head can be disconnected from the driver.
    A zenner diode is inside the laser head.
    prevents the diode from being damaged by esd when disconnected .
    Beam quality is great no distortions or reflections.
    Focus can’t be changed externally on this module.
    However this can be done when opening the laser head.
    Now for the output power
    The module is rated at 100 mw 532 nm.
    My first measurement 5 seconds after power on peaked at 104 mw.
    After 15 minutes I took an other measurement this one came in at 134 mw
    After 1 hour I took a other measurement at this point the module was about 23 degrees.
    And was doing about 158 mw so that’s a awesome



    Overall this module seems to perform very well.
    Its output is stable and free of distortions and reflections
    All of the specs are spot on for this module.
    Beam quality is really great and the beam is very tight.
    According to my calculation its about 1.2 mrad.
    This was also what was noted on the spec sheet for my specific model laser
    The beam is very visible even without any smoke in the room.
    All of the pictures I took where taken without any smoke at all.

    And as usual all the power readings where done with the Coherent power check set to 532 nm.

    Positive points.

    1. Small laser head footprint and dimensions
    2. No big heat sink and additional fans needed.
    3. High quality infrared BG39 filter fitted.
    4. Laser head is removable.
    5. High expected lifetime (so no overdriven pump diode)

    Negative point

    1. Could not come up with any really
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  2. #2
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    Default

    I have a laser a lot like that, but from lasercentuary. Mine was rated as a 150mw model, but does about 230mw on startup.

    Nice review tho! I also find the laser PSU is pretty bulky, but considering the PSU is in there too, it's not too bad. Does your PSU get hot running the laser after a while?

    Cheers,
    Dan

  3. #3
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    Default

    Quote Originally Posted by Things View Post
    I have a laser a lot like that, but from lasercentuary.
    LOL, same company!. They both have a bit of a reputation for making 'mods' to CNI lasers
    KVANT Australian projector sales
    https://www.facebook.com/kvantaus/

    Lasershowparts- Laser Parts at great prices
    https://www.facebook.com/lasershowparts/

  4. #4
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    Quote Originally Posted by dave View Post
    LOL, same company!. They both have a bit of a reputation for making 'mods' to CNI lasers
    yep there the same
    my laser century blue is also just a rebranded cni
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  5. #5
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    Quote Originally Posted by Things View Post
    I have a laser a lot like that, but from lasercentuary. Mine was rated as a 150mw model, but does about 230mw on startup.

    Nice review tho! I also find the laser PSU is pretty bulky, but considering the PSU is in there too, it's not too bad. Does your PSU get hot running the laser after a while?

    Cheers,
    Dan
    Hi Dan

    No not realy.

    but i plan to remove the bulky casing and just run the bare cni driver thats in there
    i also have the laser century model but mine does not have a fan this one does both on the psu and on the driver
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  6. #6
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    Nice review !

    Those are the same lasers that I distribute ( well the lower powered green models anyway, as well as the red models )

  7. #7
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    So new star laser is the same as Dream laser and Laser century! Hmmm!
    KVANT Australian projector sales
    https://www.facebook.com/kvantaus/

    Lasershowparts- Laser Parts at great prices
    https://www.facebook.com/lasershowparts/

  8. #8
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    Quote Originally Posted by dave View Post
    So new star laser is the same as Dream laser and Laser century! Hmmm!

    IT seems that they all but their lasers from one supplier. I'm going to dig through my e-mails, I believe I know who that supplier could be .


    EDIT : Found it : http://www.leading-techlaser.com/

  9. #9
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    yea those look very simular
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  10. #10
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    Quote Originally Posted by dave View Post
    So new star laser is the same as Dream laser and Laser century! Hmmm!

    Dear Dave:

    I think we have a lillte difference.

    It's the fact that we have the same laser head and power supply with dream lasers and laser century.
    But only us could offer 450mW laser with the same laser head.

    Baicically, about the 400mW laser, the lasercentury and dream lasers have to use the CNI lasers.

    And we just have two kinds of laser head. The wavelength like 946nm, 1064nm, 914nm all use the same laser head. The other two company have to use the CNI model.

    How to say, that to use the existing mechinsam parts for the laser is much cheaper. For the laser head of out blue lasers is original designed, the cost is much higher

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