Introducing........

[Laser Ben]

I would like to introduce my new partnership with Lasever. I am acting as their US distributor. We are offering great pricing on many of the modules, I was shocked myself when I got the price sheet!

We have 473, 532, 635, 660, 671, and 1064nm lasers in many different power levels. Everything comes with a 1 year warranty, if anything fails or begins to act funny, just send it back and we will replace it or repair it promptly.

All payments are paypal (unless you talk to me about paying some other way) and we have a full paypal cart system integrated into the site for easy use.

The sales website is here...

Everything is entered on the site and I am ready to take orders, there are just a few cosmetic things to do.

if you have any questions, send me a PM or email at downhillriderben@gmail.com. You will always get a response within one day and more often then not, within a hour!

Regards,
Ben Steigerwald

[p1t8ull]

Ben, is the 473-500-ML on your site a Lasever?
It looks like it from the picture, but I didn't think the ML series were anywhere near that powerful

Also, is the beam spec of the 635-400-ML really 4mm and less than 1mR?

[Laser Ben]

Lasever has been working recently to make more powerful and more stable versions of the ML series lasers. With the introduction of the NL series, the power output has increased to 500mW on the green and 300mW on the blue with a 500mW blue version also available in a larger head size.

As for the 635nm, you have two options, either a 6mm beam with 1mRad divergence or a 4mm beam with 2mRad divergence. That was a typo on the site, I will fix it.

[bridge]

don't want to offend, just want to do some little compute to make things more clearly.
ok, as doide, we had fast and slow axes, the fast always with small beam (1um)and large divergence(40 degree), it is diffraction limited, after well collimations, we can gain very small beam and divergence if we want, but for slow axes, it always with large beam(for 500mW 635nm, it is 150um or 200um) and small divergence(min 5degree, normal divergence 7-8 degree,max 10 degree, most are like this), the Guassiam beam transmission law decided we can't got better beam and divergence together.
as we all know, Guassiam transmission law is:
W0*Theta=M^(2) lamda/pi
W0 is beam waist
Theta is divergence
M^(2) is the beam quality factor, it is not changed.
as M^(2) , lamda, pi are fixed
so after any collimation, focus, etc, we can easily gain the result is:
W01* Theta1=W02*Theta2
let us choose 150um and 8 degree to count(please remember this need change to arc degree)
ok, 150um =0.15mm
0.15*((8/180)*pi)=0.02
after collimation, let us choose 4mm beam spec to count
then 0.02/4=0.005rad=5mrad
even the slow axes is 100um emiter, it is still had 3.33mrad
if we want to collimation it to 4mm, 2mard, and thought slow axes emitter sizes is 100um,we only wish the diode divergence is 4.5degree.
just check your doide,only the 5.6mm doide can do that, even better than that as they had small emitter sizes, 50um, 30um etc.
why people declare their red beam is so much small? good questions
if you clearly look at the beam, at the laserhead Aperture, it is not the smallest beam sizes, that's meaning not the waist of beam, it is always at the 1-2m far(this decided by which collimation lense you choose). just sample, if Aperture beam sizes is 5mm, waist of beam sizes is 4mm, 5m far away, maybe you test sizes is 15mm, count with (15-5)/5=2mrad, if count with the correct way, (15-4)/(5-1)=2.75 or (15-4)/(5-2)=3.66mrad, that is so much differnt.
so maybe you are thought whatever you count, at least at 5m, it is the same 15mm, but remember, more faraway, with large divergence and small divergence is so different.
with 2mrad divergence, 10m far away, you gain 5+10*2=25mm, if using 4+(3.66*(10-2))=33mm, 20m far away, 5+20*2=45mm, if using 4+(3.66*(20-2))=70mm, that is totally different, so best to test the beam spec is shoot the light far away, .
Best regards!
Bridge

[Laser Ben]

Bridge,

Thanks for the information. I am basing my specs off the ones I was given. I also have the pictures of the beam at 20cm, 1, 2, 4, 5, and 10 meters with calipers and the specs seem to be right on. When I receive the lasers, I will do lots of tests so I will let you know the actual divergence and size.

I have added portable lasers to the store for very reasonable prices. They should show up in the next hour of so.

Ben

[dave]

Haha, i remember the days when we sold Lasever.. The size of the beam of the 635's was certainly much larger than what was advertised..

[allthatwhichis]

as we all know, Guassiam transmission law is:
W0*Theta=M^(2) lamda/pi

Yes, I pull this one out at parties all the time...

[Laser Ben]

Lol .

[Laser Ben]

Although you guys probably are not interested, I have added the full line of Portable lasers to the website.

[allthatwhichis]

"These portable lasers are great for all sorts of uses. Astronomy, laser shows, large scale presentations, and more!" That's on the 500mW 532nm... Large scale presentations... "Here you see on Lincoln's nose..."