260W IR Laser pump handheld?

[Borislav@87]

Hello. I have free time and decided to assemble a portable IR laser with a power of 260W. For this I will use this laser pump which needs 29V and 18A power. This is new to me so I'll probably need some help. I also ordered a compatible lens that mounts on the array and will probably have good focus at about 5-6 meters. In the future I will buy another one that can have a longer focus.. Everything will be in a box again. There will be cooling with a powerful fan and the array will be attached to an aluminum radiator. At the moment I have not selected a suitable driver and power supply. I will assemble a battery from 18650 cells. I have 30 quality cells. I haven't decided exactly which driver will power it. I'm wondering if I should use a step-down or step-up driver. I can also make two batteries with two rows of 6 batteries each at 24V and connect them in series for 48V. And to use a downgrade driver. Even at the moment I have several new ones from 600W, which according to specifications support 20A. Or I can buy a step up driver or one that has an input voltage of 12V or higher and can output 28V 20A.

DC converter step up 28V / 20A
I just found this on AliExpress:
BGN48.57 | 12V to 28V 13.8V 15V 19V DC power converter 12V to 24V 15A 20A 25A 30A booster DC-DC transformer module

https://a.aliexpress.com/_Eziyom0

Laser Pump
I just found this on AliExpress:
BGN63.12 | DMK MAX Raycus IPG original Laser Source Pump Source Diode Laser Generator Parts Full Power Laser Cannon For Laser Repair

https://a.aliexpress.com/_EItTZ3A

 

[RedCowboy]

Those appear to be marked 970-975nm so know what you are working with and use the proper safety goggles.
Even a cheap pair is better than nothing.

Goggles

 

[Borislav@87]

Those appear to be marked 970-975nm so know what you are working with and use the proper safety goggles.
Even a cheap pair is better than nothing.

Goggles

Yes, I will be very careful. I decided on step-up drivers, as the accumulator that I will make again will be 24V from 18 pcs 18650 batteries. I also ordered the one from 1200W, but I am leaning towards the one from 28V /20 A. I don't know if these 2A in addition will not damage the laser. I see that the specifications give it a maximum of 19.8V and 18A. That is, at 28V per driver, it cannot take these 20A current.

I just found this on AliExpress:
BGN19.34 | 1200W 20A DC Converter Boost Step-up Power Supply Module IN 8-60V OUT 12-83V With Heat Sink 1200 W 12V to 24V 48V 1200W 20A DC

https://a.aliexpress.com/_EwhnGiC

Also an option is to use two drivers connected in parallel. Because I have one of those 600W each that I use for NUBM37 and NUBM38.

 

[Borislav@87]

I bought another one with a power of 120W. Powering it will be easier

 

[LightSourceBlue]

Good luck with the project, something I've considered before but not gotten around to!

The IPGs look like good options for a handheld, since they weigh less and apparently have a higher efficiency ratio than some of the Chinese brands - they seem to be going for a decent price recently as well. The 120w are also a decent weight, so a good option as well.

Will you be removing the fiber optic cable and going straight through to the lens (I have seen the lens you posted a photo of be used at the end of a fiber before)? Otherwise you will likely need to cleave & polish the fiber - which is always a lot of .... fun!

 

[Borislav@87]

Good luck with the project, something I've considered before but not gotten around to!

The IPGs look like good options for a handheld, since they weigh less and apparently have a higher efficiency ratio than some of the Chinese brands - they seem to be going for a decent price recently as well. The 120w are also a decent weight, so a good option as well.

Will you be removing the fiber optic cable and going straight through to the lens (I have seen the lens you posted a photo of be used at the end of a fiber before)? Otherwise you will likely need to cleave & polish the fiber - which is always a lot of .... fun!

I can't say anything about how it will happen yet. So far I have not dealt with such laser pumps. My goal is to collect everything in a box like the ones I use so far and have an adjustable focus. I was recommended a similar lens from a photo camera 420-800mm, which is very cheap ($55) The fiber will probably have to be removed and I will have to put a lens on the front with an adapter. But like I said, let them arrive first and see what it's all about. There will be a secret key, a 12V fan converter, a temperature display and other small things