Most powerful red LED

[Tachikoma]

What's the most powerful dark red (over 700nm) LED available today?

 

[IMSabbel]

Specify what you mean with "dark red". >700nm is usually infrared. Do you actually want visible light? Or do you want to use it with nightvision systems/infrared cameras?

 

[Tachikoma]

I'd like a very dark but visible red around 750nm, the IR begins over 790nm if I remember correctly

 

[IMSabbel]

I'd like a very dark but visible red around 750nm, the IR begins over 790nm if I remember correctly

Well, the cutover is fluid.
Take a look here:
http://www.yorku.ca/eye/lambdas.jpg
At 750nm, the visiual brighness is nearly 6 orders of magnitude bigger than in the green, and a factor 100 lower than the usual HeNe red.
That why nobody really makes leds in the energy range.
If people want infrared, they usually just jump to GaAs derivates at > 800nm, which is totally invisible, but really easy and efficient in manifacturing and use.

 

[frenzee]

http://www.roithner-laser.com/LED_HP_multi_chip.html