[Laser] White color LEDs

[Zilvinas, AUGMA]

wow - never thought that these can be inertial too!
Thanks Charles!



Charles Pooley wrote:
> White cannot be modulated at a high frequency--the phosphor is slow.  Also it is 
> of a larger area than the blue driver chip (which acts like a typical LED).
>
> Red is usually best if the detector is silicon, or blue or near UV is the 
> detector is PM tube.
>
> Lasers, either red 650 nm or blue 405 nm are far better, because a narrow 
> interference filter can be used for cutting out background illumination.
> With optics the beam can be of any width you want, from arc seconds to degrees.
>
>