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Recent content by RedCowboy

  1. RedCowboy

    JLasers - High Power LD Divergence

    The laser beams divergence ( starting beam waist and ending beam waist over a distance ) expressed as MRAD ( milliradians ) is different with different focal length lenses, this is why GBall diode data sheets have very different divergence numbers than sister diodes with flat window cans rather...
  2. RedCowboy

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    These will only get stronger and more compact over time, when the auto industry's investment in battery technology makes the next leap, be it evolved sodium cells, super ultra caps or something else, that will reduce the form factor alone, I expect we will have hand held laser...
  3. RedCowboy

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    https://www.aliexpress.us/item/3256805567872513.html
  4. RedCowboy

    What is the optimal solution now?

    What is the purpose of this device you wish to build ?
  5. RedCowboy

    JLasers - High Power LD Divergence

    Here's some information for your information. NUBM laser diodes do not use crystals like DPSS lasers do, they use substrate stacks with a reflective rear facet and a front facet with a partially reflective area at the center of the P/N junction, this is where the photons exit ( the entire stack...
  6. RedCowboy

    [REQ MET] Looking for a mentor or a place to learn

    Forget about the coloring books, they're above your skill level, instead keep trying to figure out the flavor of short bus window glass.
  7. RedCowboy

    [REQ MET] Looking for a mentor or a place to learn

    Attention whore much Lazardian ?? At least try to be creative/entertaining with it..... well, then again you are trolling a 3 year old post.... so maybe a new hobby ? How about coloring books ? Or will mommy not let you play with crayons unsupervised ?
  8. RedCowboy

    JLasers - High Power LD Divergence

    The NUBM42 and NUBM49 have worse divergence ( cast a wider raw bar width at a given distance ) than NUBM44/47/08/0A/0E/0F You have to measure the raw output without a lens because of edge clipping, even the copper modules we use will clip the edges of the output of the higher divergence units...
  9. RedCowboy

    PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

    https://www.aliexpress.us/item/3256806293491132.html?
  10. RedCowboy

    Just ringing the door bell

    Welcome to LPF Enjoy the laser addiction and remember safety 1st.
  11. RedCowboy

    QuaLas arrays (numb12 modules)

    Single emitters will get stronger and will be more cost effective, in the future. I expect we will see projectors with 1R, 1G, 1B and maybe a yellow laser diode and as quantum dot diodes will be less expensive to produce as well as more efficient, we should see an end to these cluster arrays in...
  12. RedCowboy

    1W Laser for Self Defense in an Active Shooter Situation

    Your ignorance is astounding..... you must be trolling. Look at the chart here, the NOHD on a 1W 532nm DPSS laser is 149 meters, a DPSS...... not a multi mode direct and that's 2.5mw per sq. cm which will not cause eye damage, it's a very conservative rating. I was thinking about how well I...
  13. RedCowboy

    1W Laser for Self Defense in an Active Shooter Situation

    If someone @ 100 meters intends to shoot you...... chances are you won't know it until you are hit. As for a 1W multi mode blinding at 100 meters in miliseconds... lmfao. Just because the 10,000 square mm bar shaped spot of your MM green 1W looks small to you at 100 meters ( from your end )...
  14. RedCowboy

    (ENDED) JLasers February 2024 Giveaway

    What's this about an RGB pointer ?? I have almost ordered one from Sanwu several times, but I just can't justify the price.




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