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JetLasers 1W 520nm PL-E Mini LPM test

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Hello, I am thinking of buying a 1W 520nm PL-E Mini, but I'm not sure about the power level. I know it won't be underspec, but I want to know if they are usually overspec (something like 1200mW). Has anyone tested it?
 
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gazer101

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I never bought from them, but I have never heard any complaints
 

dreaming

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I looked around this site and found an older review of that same laser and it tested on LPM at 0.975w.

laserpointerforums.com/threads/review-jetlasers-1w-520nm-ple-e-mini.104293/
 

Encap

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JetLasers lists 1000mW on the web site but if you really only want 1.2W for whatever reasons, the way to find out if you can get a metered by JetLasers 1.2W 520nm PL-E Mini is to email JetLasers and ask if they can/will make one metered to 1.2W for you. Only JetLasers can tell you what is possible for them to supply, internet reviews, conjucture, hopes and wishes aside.
email: jetlasers@gmail.com
Just ask. Is simple instead of imagining either way about what might be, they probably can/will do at no extra charge.

The other chioce is a Sanwu --the web site lists various models offering 1.2W 520nm and 1.2W 525nm.
 
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I looked around this site and found an older review of that same laser and it tested on LPM at 0.975w.

laserpointerforums.com/threads/review-jetlasers-1w-520nm-ple-e-mini.104293/
Thanks, I was hoping it would be overspec, meanwhile I found a review claiming they got 1200mW.
JetLasers lists 1000mW if you really want 1.2W for whatever reasons, the best way to find out if you can get a 1.2W 520nm PL-E Mini is to email JetLasers and ask if they can make one metered to 1.2W for you.
email: jetlasers@gmail.com
Thanks, I'll probably try that.
The other Chioce is a Sanwu --the web site lists various models offering 1.2W 520nm and 1.2W 525nm.
They are a lot more expensive though, and I prefer the functionality of the PL-E over the looks of Sanwu stuff.
 
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Dot

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Hello, I am thinking of buying a 1W 520nm PL-E Mini, but I'm not sure about the power level. I know it won't be underspec, but I want to know if they are usually overspec (something like 1200mW). Has anyone tested it?

For what it's worth... I have a Sanwu 525nm Ranger 1.2W. It clocks in at 1.4W and I love the analog dimmer.
 
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I emailed Gray asking if they could sell me the laser at 1.2-1.3W, even if it costs a bit extra. Waiting for his response.
He said the bare diode can output 1.2-1.3W but they keep it at around 1W due to lens power losses. That would be around 80% efficiency, somewhere in between a 3-element and a G7/G8.
I emailed Gray asking if they could sell me the laser at 1.2-1.3W, even if it costs a bit extra. Waiting for his response.
It would cost me around 50€ extra (333€ vs 280€), I prefer the Jetlasers host due to the higher heat capacity, side constant and momentary switches, and internal focusing. But the adjustable power seems cool too. Now I'm not sure which one to buy, probably the JetLasers because it's cheaper and I like the host, but I'm not sure. Man, if only JetLasers made a more powerful 525nm PL-E Mini. Is the difference between 1W and 1.4W very noticeable?
 

Wakrah

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I think it is worth going for the 1.4 watt myself, not a huge amount of difference, some say not enough to see, but I can readily see it. If you can find a pointer which uses a diode out of a NUGM04 array, you can have 1.5 watts of output power, but this diode needs a larger diameter, longer focal length lens than we customarily use in our pointers to keep the divergence down.

If you are looking for a consistent amount of output power, don't buy a DPSS laser pointer, they vary all over the place from 1/3 to full output, as they warm or cool.
 
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I think it is worth going for the 1.4 watt myself, not a huge amount of difference, some say not enough to see, but I can readily see it. If you can find a pointer which uses a diode out of a NUGM04 array, you can have 1.5 watts of output power, but this diode needs a larger diameter, longer focal length lens than we customarily use in our pointers to keep the divergence down.

If you are looking for a consistent amount of output power, don't buy a DPSS laser pointer, they vary all over the place from 1/3 to full output, as they warm or cool.
It's a 40% power difference, it will obviously be noticeable side to side. But just how big is the difference? I'm not sure if percieved brightness is proportional to the power or to the square root of it. I personally belive it's the square root, as in my experience the difference in brightness I saw with my laser 303 and the 100mW red ripped from a laser light show was about 3-4x, which is approximately the square root of what the brightness calculator says (about 13x). In that case, I believe it would be the square root of 1.4 times brighter, which is around 1.2 times. I haven't compared my Gatling with the 303, as the 303 died long before I bought the Gatling, and I don't even know its exact power. Could be anywhere between about 1.25-2W (it has an Odicforce G7 which increases its power by about 25%).
 

Wakrah

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All I can say is I'd go for the 1.4 as I believe there is enough difference to be worth it. You can see some comparisons between power levels of two DPSS lasers in this video, but the power meter head should have been much further away as there was too much glare from the light reflecting off the LPM thermopile:

 
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I've been thinking a bit more about it, I believe the difference between wavelengths is directly proportional. I found this article about how percieved brightness scales with power, and turns out it is proportional, on average, to the cube root of the power difference. I also used this table to do some calculations. Assuming my blue laser is 2W and the green is 1W, the brightness difference in light vision is 485/(26*cbrt(2)), which is about 15x. In night vision, it's 1589/(773*cbrt(2)), which is about 1.6x. The difference between a 1W green and a 1.4W green is around cbrt(1.4), which is approximately 1.12x brighter. Obviously this can vary quite a bit from person to person, your exponent must be higher than 0.33. Also, cameras just don't capture light the way we do, you can't rely on them for brightness comparisons.

Edit: Changed the second link to the correct one
 
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Wakrah

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Yes, I don't disagree, cameras in cell phones (the one used for this YT video) are approximations of what we see, but even worse was the way the light reflecting off of the thermopile affected the apparent brightness of the individual beams. I can state this, I have had a 1 watt and a 1.4 watt pointer using the same diode, and I prefer the 1.4, the difference isn't huge, but is enough for me :)

As a rule of thumb, many believe 2X is enough difference to easily see a worthwhile amount of increase.
 
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If the difference isn't huge, then I think I'll go for JetLasers. Also just remembered the PL-E Mini has a protective outer lens, which is another plus. Depends on what you mean by huge, of course.
 

ArcticDude

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If the difference isn't huge, then I think I'll go for JetLasers. Also just remembered the PL-E Mini has a protective outer lens, which is another plus. Depends on what you mean by huge, of course.
Can't go wrong with Jetlasers... Top notch quality!! :)
 




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