I posted this on the photonlexicon Facebook page but got no replies.
So I bought a 100mW CNI 593.5nm laser recently with a mismatched driver. The laser strobed and only output 1mW I assumed it was dead.
Long story short the laser works fine but the driver is the issue.
The laser head needs 2 amps Minimum anything below that I get 1 mW at 2 amps it spikes to 34mW. I achieved this by running the TEC’s on the driver and the diode on my bench power supply.
I am getting choppy output current and I can’t seem to get the driver to go above 855mA (I have diode current Pot turned all the way up). As shows in this video.
I also discovered the output for the TEC looks the same way on the scope but only when there is a load on the diode output. Without a load on the diode the xTal TEC output is smooth. However removing the load on the xtal TEC does not smooth out the diode current.
The The driver Is a PSU-H-OEM like on this page http://www.cnilaser.com/PDF/MGL-F-593.5.pdf The laser head has same plug as one on PDF But is a smaller laser head.(like the head Laserglow sells )
Here are some Pics of the driver
My 3 questions are does anyone know what the problem is on this driver is ?
does anyone know how to get the current up to 2 amps?
Or worst case does anyone have a working driver i can buy. My budgets only $70. ?
Update
Bad news So The new PSU for this laser Arrived and I put the new PSU under the driver and hooked it all up. I turned it on and smoked the filter cap right by the diode output Connector on the board Turns out I had one of the pairs of voltage +and - mixed up and killed the driver with reverse current.
I replaced the bad cap but its no good something else died. Probably all the SMD transistors
Updated 5/12/14
The guy I sent it to replaced all the large Components and The IC's and it still does not work. He said he would have to check the tiny resistors now. EEEK
But just in case I am looking for any power supply that would run this head. It needs to run 2 TEc's and a diode and a few amps Not sure the exact power ill try to figure than out and get back but its a few watts of pump power.