Hello, I got a 589nm laser this month and was finaly able to do a LPM test.
I build the LPM myself unsing a TLV314 OpAmp and a small, 6 x 6mm TEC.
To calibrate the LPM I used my 1W Spartan. you can see the calibration curve in the pictures.
The laser was powered by an Agilent 6632B power supply and drawing 1,63A during the whole test.
So after the test I know now that I kinda got what I paid for. Unfortunately is is unstable like you can see and modehopping a bit.
I build the LPM myself unsing a TLV314 OpAmp and a small, 6 x 6mm TEC.
To calibrate the LPM I used my 1W Spartan. you can see the calibration curve in the pictures.
The laser was powered by an Agilent 6632B power supply and drawing 1,63A during the whole test.
So after the test I know now that I kinda got what I paid for. Unfortunately is is unstable like you can see and modehopping a bit.