SOLD: BW Tek 45mW 473nm Lab Laser

Hey everyone, it is time for me to let another one go:

For sale today is my BW Tek 473nm lab laser. I personally refurbished this unit and performed several realignments on it to get the output as high as possible and as stable as possible. Beam is a pure TEM00 and does NOT mode hop! I have LPM'd it as doing 47mW peak, which it will sustain for about 10min of runtime before dropping to 44-45mW from then on for several hours. These units only did 10mW when up to spec new as stock.

This laser comes with a 120V power supply and stock driver with intact and operational temperature stabilization loop for solid output. Comes with the ghetto Tupperware electronics containment system as well. Divergence is high since it is a true point source with an initial beam diameter of less than 500um. Simply add any plano-convex or convex lens at the lens's focal length distance to collimate for infinity. I can throw in a 28cm fl. lens if you wish.

These units used to be plentiful but are now quite hard to find.

US buyers only, sorry intl' folks, but if I were to send it over seas there is no way I could guarantee the alignment would not shift; I've seen how packages are treated in intl' mail!

My price: $73 shipped w/ USPS Priority Mail. Paypal payment only to RomSigurthr@gmail.com



More photos and video available upon request.

Re: FS: BW Tek 45mW 473nm Lab Laser

Pm sent

Re: FS: BW Tek 45mW 473nm Lab Laser

Damn, wish I could've gotten this off you before, my laser fund has been very tight for a long time

Re: FS: BW Tek 45mW 473nm Lab Laser

Wow, that is impressive. Damn impressive.

Well done tuning it!

Trevor

Re: FS: BW Tek 45mW 473nm Lab Laser

Things said:

Damn, wish I could've gotten this off you before, my laser fund has been very tight for a long time

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If it wasn't for the insane cost of sending something Down Under I'm sure it would be in your hands by now.

Trevor said:

Wow, that is impressive. Damn impressive.

Well done tuning it!

Trevor

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Thanks! It really wasn't that hard to do. A q-tip, precision screw drivers, tweezers, a camera that could see 946nm, a LPM, and IR blocking goggles were all I used.

Re: FS: BW Tek 45mW 473nm Lab Laser

Dam wish I did more research on 473nm labbys before I sold the kung!!!!! If only I knew more about them I would have totally traded you! Face palm x100!!!!! Oh well my loss

Re: FS: BW Tek 45mW 473nm Lab Laser

Livinloud said:

Dam wish I did more research on 473nm labbys before I sold the kung!!!!! If only I knew more about them I would have totally traded you! Face palm x100!!!!! Oh well my loss

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Heh, no kidding! With the flood of PMs on this sale my wife agreed to let me order a SRK. I just placed an order with CNQG, lmao. Hit me up with that 9A driver replacement info.

I nearly ordered an EagleTak SX25L3 MT-G2, but couldn't get my better half to agree to me spending more than what I'm making off the laser. One day I'll grab one of these bad boys!

Re: FS: BW Tek 45mW 473nm Lab Laser

PP sent. Thanks!

Re: FS: BW Tek 45mW 473nm Lab Laser

PP Received. Laser is SOLD! THANK YOU!.

I'll have it shipped out Monday or Tuesday!

We've gotta talk about aligning. I can't seem to get anywhere with mine. Though my method involves making a tiny adjustment, closing, on, off, adjust, repeat.

Yeah that method simply won't do Bloom. The range of motion that makes the output go from 40mW stable to 5mW mode hop is not linear. You have to be actively watching the output and what you're doing under the hood to get the best results. IIRC I had to set the MCA slightly closer to the prism pair and then swivel it slightly in the transverse axis in order to get it just right. It truly was a tiny movement that yielded the final results. Getting it to over 30mW was easy, getting the last 17mW out of it took hours. In doing do it stopped mode hopping as well.

Sigurthr said:

Yeah that method simply won't do Bloom. The range of motion that makes the output go from 40mW stable to 5mW mode hop is not linear. You have to be actively watching the output and what you're doing under the hood to get the best results. IIRC I had to set the MCA slightly closer to the prism pair and then swivel it slightly in the transverse axis in order to get it just right. It truly was a tiny movement that yielded the final results. Getting it to over 30mW was easy, getting the last 17mW out of it took hours. In doing do it stopped mode hopping as well.

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I've noticed.. My goal in the beginning was to have IR blocking glasses, but glasses tha also pass 473. Those don't seem to exist without shelling out an arm or leg, so I just put it on the backburner. I also only have my phone for cameras, so the IR capturing abilities are minuscule.

Might just have to remain on the backburner for a while. Not sure how I could do it with my current supplies.

PM incoming.