Seeking the highest power output affordable 780-850nm pulse laser diode available and this is all I have found:
SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 w OSRAM | eBay
I have been unable to find this diode at what I consider a reasonable price, all I can find are listed at over 50 dollars each on ebay which I can't pull the trigger on yet because that price just seems too high and I want several of them.
Unfortunately, the Osram SPL LL85 is a discontinued device and I cannot yet find any relatively high power 850nm pulse diodes made by any other manufacturer anywhere, just old stock for this specific device on ebay. While the replacement for the SPL LL85 laser diode made by Osram which operate at 905nm are much less expensive and have more power output, I prefer 850nm due to the low atmospheric absorption at that wavelength compared to 905nm which is very high, at least for the distances I am wanting to use it for. My project is not for a laser range finder, but a beacon and need the shorter wavelength of 850nm.
Here is a link to a jpeg graph showing the atmospheric transmittance and absorbance of a band of near-IR wavelengths. I have added red lines in the areas I can use, the highest power pulse diodes with the shortest wavelength I can find in an area of low absorbance are close to 800nm, thus the reason I am interested in the Osram 850nm pulse laser diode:
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I want to use as high a power pulse diode as I can find at the shortest possible wavelength in the near IR spectrum, 850nm appears to be the only choice as I am not finding pulse diodes with output ratings over 10 watts at 780nm. Can anyone here point me at something better than the above ebay listing, or at least at a better price?
SPL LL85 Hybrid Pulsed Laser Diode with Integrated Driver Stage 850nm 14 w OSRAM | eBay
I have been unable to find this diode at what I consider a reasonable price, all I can find are listed at over 50 dollars each on ebay which I can't pull the trigger on yet because that price just seems too high and I want several of them.
Unfortunately, the Osram SPL LL85 is a discontinued device and I cannot yet find any relatively high power 850nm pulse diodes made by any other manufacturer anywhere, just old stock for this specific device on ebay. While the replacement for the SPL LL85 laser diode made by Osram which operate at 905nm are much less expensive and have more power output, I prefer 850nm due to the low atmospheric absorption at that wavelength compared to 905nm which is very high, at least for the distances I am wanting to use it for. My project is not for a laser range finder, but a beacon and need the shorter wavelength of 850nm.
Here is a link to a jpeg graph showing the atmospheric transmittance and absorbance of a band of near-IR wavelengths. I have added red lines in the areas I can use, the highest power pulse diodes with the shortest wavelength I can find in an area of low absorbance are close to 800nm, thus the reason I am interested in the Osram 850nm pulse laser diode:
I want to use as high a power pulse diode as I can find at the shortest possible wavelength in the near IR spectrum, 850nm appears to be the only choice as I am not finding pulse diodes with output ratings over 10 watts at 780nm. Can anyone here point me at something better than the above ebay listing, or at least at a better price?