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Thread: Laser Century 50 mw 532nm dpss

  1. #1
    Join Date
    May 2007
    Location
    The Netherlands
    Posts
    291

    Thumbs up Laser Century 50 mw 532nm dpss

    Laser Century 50 mw 532nm dpss



    The Specs :

    Model GL532T-050
    Output Power 50mW
    Output Wavelength 532nm
    Spectral Linewidth 0.1nm
    Beam Mode TEM00
    Operating Mode CW
    Beam Divergence, Full Angle 1.5 ± 0.2mrad
    Beam Diameter @ Aperture 1.0 ± 0.2mm
    Power Stability (T= 25℃) <±5% (over 2 hours)
    Beam Pointing Stability <0.05mrad
    Residual IR <0.01%
    Ellipticity >90%
    Operating Temperature, Case 10℃ ~ 35℃
    Warm Up Time 10 minutes
    Expected Operation Lifetime 10000 hours
    Power Supply PS-500
    Input Voltage 85~240VAC, 50/60Hz
    Modulation 10KHz TTL Modulation
    Dimensions of Laser Head 102 × 39 × 39mm
    Weight of Laser Head 0.3Kg
    Dimensions of Power Supply 175 × 75 × 40mm
    Weight of Power Supply 0.5Kg
    Warranty 12 months

    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 Lasercentury 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 Lasercentury that this test model does 70mw
    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 50 mw 532 nm.
    My first measurement 5 seconds after power on peaked at 51.5 mw.
    After 15 minutes I took an other measurement this one came in at 73 mw
    After 1 hour I took a other measurement at this point the module was about 23 degrees.
    And was doing about 78.8 mw so that’s a free 27 mw. :P



    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.
    i was unable to take a good picture of the beam output.
    Because the brightness overwelmes my camera.
    But its beter then that of the aixiz green module
    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

    For more info check

    David Wang
    Shanghai Laser & Optics Century
    www.lasercentury.com / www.lasercentury.net
    david@lasercentury.com
    Tel: 0086-21-34624391
    Fax: 0086-21-34624392
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  2. #2
    Join Date
    May 2007
    Location
    The Netherlands
    Posts
    291

    Default

    updated:
    after some carefull tuning module now does 90 mw stable
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  3. #3
    Join Date
    Nov 2007
    Location
    Cairns, Australia
    Posts
    1,896

    Default

    I have the 150mw version of this. They are great lasers IMO. Mine is rated at 150mw, and has about 200 hours burn in, and it does a nice ~220mW right on startup! After a few mins it drops to like 190, but if you keep it cool it keeps it's nice high output

    One problem I have with these lasers is the driver gets hot very quickly, so some heatsinking for that is required if you wanna run it for long times (baseplate is sufficient).

    Nice review, I also find the dot from this laser very clean

  4. #4
    Join Date
    May 2007
    Location
    The Netherlands
    Posts
    291

    Default

    yes there prety good and there not to expensive.
    the only negative thing on the module is the big driver
    but as far as beam specs and power its great
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

  5. #5
    Join Date
    Nov 2007
    Location
    Cairns, Australia
    Posts
    1,896

    Default

    It's not too bad considering the PSU is in there too

  6. #6
    Join Date
    May 2007
    Location
    The Netherlands
    Posts
    291

    Default

    Quote Originally Posted by Things View Post
    It's not too bad considering the PSU is in there too

    yea thats true
    but like the oem style 5 or 12 volt supplies beter
    i just tend to power all the drivers off a decent power computer supply or switching power supply
    Do not look into laser with remaining eye
    Need laser repair contact me !!!!!!

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