- Joined
- Jul 4, 2008
- Messages
- 2,499
- Points
- 113
SO, I decided to make an effort to experiment with active cooling and these newish H series diodes. After reading that their operational temperature can be from -40c to ~60c I thought why not try and see what my output efficiency might be at -20c.
I used RHD's build for my test.
RHD used an all aluminum host and a standard Aixiz diode holder. Lens is a 405G1.
First thing I did was cool down my host for about 30 minutes to -20c.
I took a measurement of the output before moving to our cold test.
TEST 1) Host temp =22.3c
Peak - Ophir20C 2356mW, 40seconds 2146mW, 1 minute 2060mW
LaserbeeII 40sec 2114mW, 1 minute 2028mW
Test 2) Host temp =-19.6c
Peak - Ophir20C 2778mW, 40sec 2535mW, 1 minute 2470mW
LaserbeeII 40sec 2503mW, 1minute 2435mW
WOW!!! I had no idea that cooling could yield these kinds of results.
A little shock.
The laser in question was lined up dead centre on the Ophir20C. I do not think this is an error.
I am going to test my results again to see if I get the same output. If you have one of these diodes running 1.8A-2.1A, I hope you to also try and see if you too come up with simular results. This test just showed me ~118% rise of output. :drool:
If you have a H series diode and have the ability to attempt this experiment, I seriously would love to see your results and compare them.
I used RHD's build for my test.
RHD used an all aluminum host and a standard Aixiz diode holder. Lens is a 405G1.
First thing I did was cool down my host for about 30 minutes to -20c.
I took a measurement of the output before moving to our cold test.
TEST 1) Host temp =22.3c
Peak - Ophir20C 2356mW, 40seconds 2146mW, 1 minute 2060mW
LaserbeeII 40sec 2114mW, 1 minute 2028mW
Test 2) Host temp =-19.6c
Peak - Ophir20C 2778mW, 40sec 2535mW, 1 minute 2470mWLaserbeeII 40sec 2503mW, 1minute 2435mW
WOW!!! I had no idea that cooling could yield these kinds of results.
A little shock.
The laser in question was lined up dead centre on the Ophir20C. I do not think this is an error.
I am going to test my results again to see if I get the same output. If you have one of these diodes running 1.8A-2.1A, I hope you to also try and see if you too come up with simular results. This test just showed me ~118% rise of output. :drool:
If you have a H series diode and have the ability to attempt this experiment, I seriously would love to see your results and compare them.
Last edited:
