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- Jan 8, 2016
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Hi all,
I'm new to the whole laser thing working on my first build. Although I am new I am well aware of things like ESD, heat-sinks, grounded tools, basic electronic theory, etc.
I am hoping to use one of these 50mW blu-ray laser diodes (SLD3232VF - http://www.lillyelectronics.com/download/ICPDF-SLD3232VF-GD.PDF) in a scientific project, but am having trouble getting it to lase.
Couple quick questions about the diode. Does the common pin necessarily have to make contact with a "case" or "heat-sink" or can it be left floating for all intensive purposes?
So I bought a driver board from AIXIZ . Having read through a few posts I found that this has been a topic of discussion (http://laserpointerforums.com/f67/making-your-aixiz-driver-work-solution-56733.html). So I have tried tying up the TTL+ to the VCC+ with a typical low power diode. Interestingly, I get 0 voltage coming to the laser diode PCB traces with the cathode facing the TTL+ (multimeter across LD+ and LD- or LD-/null). With the cathode facing the VCC+ using a 5.05V power supply (cell phone charger) the voltage drops only slightly to 4.98V. This is contradictory for what the forum post (linked previously) states? Is something wrong with my board?
Either way I am failing to lase, even using a fresh diode (operating under the assumption I fried the first one). Considering I have tinkered a bit with the diode(s) by now what is the likelihood it is burnt out? Is there a way to test for diode failure?
Sorry for the long post, really appreciate any advice and will respond with details/tests. Thanks
I'm new to the whole laser thing working on my first build. Although I am new I am well aware of things like ESD, heat-sinks, grounded tools, basic electronic theory, etc.
I am hoping to use one of these 50mW blu-ray laser diodes (SLD3232VF - http://www.lillyelectronics.com/download/ICPDF-SLD3232VF-GD.PDF) in a scientific project, but am having trouble getting it to lase.
Couple quick questions about the diode. Does the common pin necessarily have to make contact with a "case" or "heat-sink" or can it be left floating for all intensive purposes?
So I bought a driver board from AIXIZ . Having read through a few posts I found that this has been a topic of discussion (http://laserpointerforums.com/f67/making-your-aixiz-driver-work-solution-56733.html). So I have tried tying up the TTL+ to the VCC+ with a typical low power diode. Interestingly, I get 0 voltage coming to the laser diode PCB traces with the cathode facing the TTL+ (multimeter across LD+ and LD- or LD-/null). With the cathode facing the VCC+ using a 5.05V power supply (cell phone charger) the voltage drops only slightly to 4.98V. This is contradictory for what the forum post (linked previously) states? Is something wrong with my board?
Either way I am failing to lase, even using a fresh diode (operating under the assumption I fried the first one). Considering I have tinkered a bit with the diode(s) by now what is the likelihood it is burnt out? Is there a way to test for diode failure?
Sorry for the long post, really appreciate any advice and will respond with details/tests. Thanks
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