IR may be better for some applications than red because there are materials (most notably- acrylic) that are transparent to visible light yet opaque to IR. Laser diodes start cutting the lightest materials at approx 100mW and become somewhat more useful at around 200mW. I guess you can consider it to be 1/1000th of 25W of useful energy, as in 25mW – far too low to cut anything. I just can’t see how you can cool a plastic device that passes 40A through it without melting completely.Īdditionally, the 0.1% duty cycle does not seem like it’ll work for anything. All laser diode housing I’ve seen are designed to accommodate a standard-type laser diode in various metal can TO packages – 5.6mm, 9mm. For one thing there’s no housing for a 5mm plastic body device that I know of. I don’t think you can use it for anything much as far as laser cutting it concerned. 40A in a form factor of a 5mm LED? This is just a crazy amount of current! Anyhow, the datasheet states that its duty cycle is only 0.1%, in other words, it can be on for only 1/1000 of the time you’re using it. Looking at it’s datasheet, it has 40A (!) forward current.
OSRAM SPLPL90 laser diode seems a very interesting but very odd device. Oh, and before you go: even the lowest power laser diodes mentioned here will burn your retina if you’re not careful, so use proper laser safety glasses! So, yeah, this Phillips drive was a good pick … So, your ideal drive to harvest parts from, at least for DIY CNC laser cutting purposes, is usually manufactured in 2005-2008 and it’s a desktop drive advertised as a 16x speed recorder. This diode operates at 2.5V and 130mA current and has a wavelength of 658nm. Ideally, what you are looking for (from the DIY perspective) is a red laser diode of 200mW+ optical power output in a TO-18 package, meaning a round metal body with the larger diameter of 5.6mm – the size/shape most prevalent among suppliers of mountings for the diode, such as AixiZ or O-Like.
Note that many of the most recent drives have laser diodes either without any package (bare silicon inside the optical assembly) or on really hard to work with glass plates. 2008-current x24 speed recording Dual Layer – 400mW.You can also venture a really rough guess based on the date of manufacture if by some very strange reason no info about your drive is available on the Internet (what is it, from Mars?) or you’re just been really lazy: According to Sony’s product brochure for one of their high-power red laser diodes, SLD1236VL, the diode’s output power (CW or continuous power) will be somewhere along this list:
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