Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 06-23-2013, 04:58 PM #1
Junior Member
 
Join Date: Sep 2011
Posts: 5
Rep Power: 0
graemeian is on a distinguished road
graemeian graemeian is offline
Junior Member
 
Join Date: Sep 2011
Posts: 5
Rep Power: 0
graemeian is on a distinguished road
Default High Power Laser Driver

I have a Coherent 800 nm, 12W output laser. I need to use it to do some dot matrix printing. I plan to use ~1 ms pulses. The laser needs ~2 V and ~30A. I want to build a power supply. My thoughts were to use a crazy large car audio cap used to keep the amplifier running during a bass pulse. I was going to use a MOSFET and adjust the gate to keep the capacitor charged to 2V. I would use another MOSFET and a square wave to switch the laser. I would need about 100 pulses over about 3 seconds. The process will be repeated every minute.
Has anyone tried anything similar with any success or is there a better way to generate high current low voltage switching for these laser diodes. Is there an off the shelf, low cost system already available?
Thanks.


graemeian is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 06-23-2013, 11:10 PM #2
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: High Power Laser Driver

Do you have a schematic to refer to? Its hard to picture the circuit without the actual connections you're talking about.

There is "off the shelf" stuff all over, but the costs are sort of insane.

Let me know if this sounds like something you could use: FEELER: High Current PSU PCBs

It can be modulated via TTL or analog control...

Not yet sure about response time. I'll need to experiment with it some more.
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball is offline   Reply With Quote
Old 06-24-2013, 03:45 PM #3
Junior Member
 
Join Date: Sep 2011
Posts: 5
Rep Power: 0
graemeian is on a distinguished road
graemeian graemeian is offline
Junior Member
 
Join Date: Sep 2011
Posts: 5
Rep Power: 0
graemeian is on a distinguished road
Default Re: High Power Laser Driver

Do you know anything about the reliability of the CO2 laser printers found on ebay for $725. I would like to find a kit that would allow me to integrate a laser marking system into my application. I do not need the x-y table. I started with a laser diode but I could easily change.
graemeian is offline   Reply With Quote
Old 06-25-2013, 05:47 PM #4
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: High Power Laser Driver

I've heard mixed reviews about them.

Some have problems getting the thing to the door with internal parts surviving.

The software is supposedly junky - but I think external controllers can be bought for them.

Member "Things" here has one of the $2700 ones. I think he would definitely recommend it - he's got good experience with cutters - you might ask him if he has any ideas for you.
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball is offline   Reply With Quote
Old 06-25-2013, 08:28 PM #5
ped's Avatar
ped ped is offline
Class 3B Laser
 
Join Date: Nov 2008
Location: Liverpool , UK
Posts: 4,915
Rep Power: 7046
ped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond repute
ped ped is offline
Class 3B Laser
ped's Avatar
 
Join Date: Nov 2008
Location: Liverpool , UK
Posts: 4,915
Rep Power: 7046
ped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond reputeped has a reputation beyond repute
Default Re: High Power Laser Driver

Also, 2v is a round figure. @ 2v the output might be a few watts , at 2.1v you might blow the diode, the "spec sheet" is a guideline only.

You need current control, not voltage control.
__________________
@Ped0771

5000mW Coherent/Kenometer

Lazoors:
550mW C6 9mm lens
445nm Blord "Big Boy" 3.36w 9mm lens
445nm Jarob C6 kit (on 3rd diode) 1.9w 9mm lens
Various 532n nm 15mw pens ~ 600mW monster
515nm 34mW Direct Green Diode - LaserBtB
Various 650's - 1mW pens upto 300mW C6's
ped is offline   Reply With Quote
Old 06-25-2013, 10:48 PM #6
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: High Power Laser Driver

Quote:
Originally Posted by ped View Post
Also, 2v is a round figure. @ 2v the output might be a few watts , at 2.1v you might blow the diode, the "spec sheet" is a guideline only.

You need current control, not voltage control.
Right. For a diode array, current control is most important. Most high current PSUs can handle at least 2V dropped on the output.
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")

Last edited by Meatball; 06-25-2013 at 10:49 PM.
Meatball is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 10:49 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC