Recent content by Roger O

Hi, I am interested in your 7w laser. Would you please send me some specs and pics. Roger. reodds@hotmail.com

Hi Mods, would you please delete the 2 pages of spam, it really is annoying and gets in the way of the thread. Thanks!

You're right. I checked with several supply companies near me and they all require certified containers, and in several cases a medical license.

Red, the problem is that automotive nitrogen is in a gaseous form and not the liquid nitrogen that is used for medical purposes. Liquid nitrogen is COLD (-196 degrees f), which is why it can be used as a very good coolant for the diodes.

I guys, since we're exploring very high outputs with these diodes, does anyone know of a good adjustable current driver (not a lab power supply) than can be bought or made to raise the output gradually while measurements are taken?

Fantastic, please put me down for 2. Any idea about NUBM08 availability for "reasonable" numbers?

Red, is there an easy way to have an adjustable output on these diodes (say through the driver). I would like to vary the output from 1 watt to max. Also, any news on availability and a possible group buy?

Me too, probably 2 if available.

One of the Chinese regulated supplies. I am concerned that it I drive the diode directly from the power supply, the current regulation will not be good enough. I would have thought that some of the experimenters on the board would have developed an easy way to modulate the laser power output...

Thanks for the reply. I am using a lab power supply, and the laser I currently have is a lab module. The problem is that the difference between the minimum voltage and the maximum is very small (less than 1 volt), and does not give me an easy way of adjustment. Perhaps a better power supply...

Hi everyone, I'm thinking about getting one of these diodes and driver from Jordan. I realize that the max power is high, my question is does anyone know how to simply adjust the power down and back up as needed for experimentation? Reducing the input voltage with a potentiometer is an easy...

The project is using the output for studying various optical effects of the blue laser. I wanted to launch the laser into a fiber optic guide because it is easier to use the fiber light guide for local close aiming at many different samples quickly (usually perpendicular to the laser) as...

Hi everyone, I know that this question may have been asked before, but with no real answer, or solution. Does anyone have the ability to help me build a 445nm high power (>3 watt) lab laser that will fire into a fiber optic light guide? Fiber will be about 600u in diameter, and made of glass...

Mods, since this is an ongoing open source project, perhaps it should be a sticky?

Beautiful looking machine - we need some movies! Are these available commercially, and at what cost? Good luck and Congrats with the new baby!