qumefox
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I'll probably get jumped on for this but I don't care, It's my diode and i'll abuse it how I want. :na:
To start off with.. My 'super high tech laser experimentation area' here at home.. At least until I finish painting the extra room and put down new carpet. Most of my laser stuff lives at work right now.
Awesome, isn't it? :shhh:
But anyway. I'll get right to the meat of this since I wasn't in a position to record a whole lot of data (literally.. hanging over the edge of the couch, while trying to simultaneously keep the cats away)
Said diode from DJNY's GB in a module, in a heatsink hooked to the spectrometer. It's being over-driven here at 150mA (datasheet max is 90mA) which is as far as I dared push it.. I may have 10 of these, but that doesn't mean I really want to kill one.
My fiber to heatsink adapter is another miracle of side-of-couch engineering.. It's the front out of one of the MDXL pens stripped of its guts. I discovered this was a tight fit in the 12mm hole in the heatsink, so I taped the fiber in one end, stuffed the other end full of papertowels to act as a diffuser so the spectrometer wouldn't get overloaded, and I was good to go.
But regardless. One may ask.. but how much did it output driven at 150mA? Well, here's the answer to that, using one of my red AR acrylics, which are the lowest loss lenses I have for reds.
As you can see, 32mW. Not too shabby from a 20mW raw output rated diode. I ran it for a little while at that power. and it was solid at 32mW so if it was degrading, it wasn't doing it quickly.
I know some people will probably be whooping and hollering about it not being worth it over-driving them due to the wavelength shift.. Well. I didn't forget about the spectrometer results.. Here you go.
I personally can live with 638.83nm. And for the purists who will still yell 'But it's not 635nm!'.. Well. This particular diode was never capable of that anyway under 'normal' conditions. Sure you could stick it on a TEC and cool it.. But is it really worth going to that trouble for a 20mW diode? Even at threshold, this diode started out at 636.74nm.
32mW of 639nm equals 27mW of 635nm, so it's still a net gain as far as i'm concerned, and side by side with 660's, 639 is going to look just as different as 635 will.
This concludes this evenings diode torturing. I'm going to bed.
To start off with.. My 'super high tech laser experimentation area' here at home.. At least until I finish painting the extra room and put down new carpet. Most of my laser stuff lives at work right now.
Awesome, isn't it? :shhh:
But anyway. I'll get right to the meat of this since I wasn't in a position to record a whole lot of data (literally.. hanging over the edge of the couch, while trying to simultaneously keep the cats away)
Said diode from DJNY's GB in a module, in a heatsink hooked to the spectrometer. It's being over-driven here at 150mA (datasheet max is 90mA) which is as far as I dared push it.. I may have 10 of these, but that doesn't mean I really want to kill one.
My fiber to heatsink adapter is another miracle of side-of-couch engineering.. It's the front out of one of the MDXL pens stripped of its guts. I discovered this was a tight fit in the 12mm hole in the heatsink, so I taped the fiber in one end, stuffed the other end full of papertowels to act as a diffuser so the spectrometer wouldn't get overloaded, and I was good to go.
But regardless. One may ask.. but how much did it output driven at 150mA? Well, here's the answer to that, using one of my red AR acrylics, which are the lowest loss lenses I have for reds.
As you can see, 32mW. Not too shabby from a 20mW raw output rated diode. I ran it for a little while at that power. and it was solid at 32mW so if it was degrading, it wasn't doing it quickly.
I know some people will probably be whooping and hollering about it not being worth it over-driving them due to the wavelength shift.. Well. I didn't forget about the spectrometer results.. Here you go.
I personally can live with 638.83nm. And for the purists who will still yell 'But it's not 635nm!'.. Well. This particular diode was never capable of that anyway under 'normal' conditions. Sure you could stick it on a TEC and cool it.. But is it really worth going to that trouble for a 20mW diode? Even at threshold, this diode started out at 636.74nm.
32mW of 639nm equals 27mW of 635nm, so it's still a net gain as far as i'm concerned, and side by side with 660's, 639 is going to look just as different as 635 will.
This concludes this evenings diode torturing. I'm going to bed.
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