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- Jan 7, 2007
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Greg at StoneTek sent me a sample of his new red laser diode offering for me to test. This is his new SLD1239JL-54 diode.
The testing was done using an Aixiz housing and no TEC cooling. A current limited power supply was used for constant current plus an LPM-1 power meter with an ND-8 filter.
The current was ramped up as shown on my "old school" graph at the bottom. Current was increased to 420 mA but it was found that anything over 400 mA only produces more heat. The curve gets very flat at the top.
I ran the diode for a total of 14 hours at 400 mA in 4 sessions (4,4,3,3 hours) and noticed no degredation in power out or beam quality. The power stayed at 240 mW +/- 3 mW during the test.
Good to see Greg back with new diodes.
Mike
The testing was done using an Aixiz housing and no TEC cooling. A current limited power supply was used for constant current plus an LPM-1 power meter with an ND-8 filter.
The current was ramped up as shown on my "old school" graph at the bottom. Current was increased to 420 mA but it was found that anything over 400 mA only produces more heat. The curve gets very flat at the top.
I ran the diode for a total of 14 hours at 400 mA in 4 sessions (4,4,3,3 hours) and noticed no degredation in power out or beam quality. The power stayed at 240 mW +/- 3 mW during the test.
Good to see Greg back with new diodes.
Mike