White beam LD ?

As you guys know that a conventional white LED is consist of blue LED + yellow phosphor,
new white laser diodes (if currently under-developed) will be unveiled as a blue LD with yellow phosphor combination.



recently announced laser-driven headlights such as the BMW and Audi, it is also consist of
high power blue LD with yellow phosphor to produce white light output.



that's for sure divergence of a vehicle headlamps must be dispersed for human-eye safety,. but laser pointer is opposite.




i know that the yellow phosphor mixed with resin which is used on conventional LED will not work on laser diodes.
laser's thermal output is far more stronger than high-power LEDs thus thermal durability possibly unmet for LD.


so i think single crystal type of yellow phosphor must be needed to build single package white laser diode.



Imagine the white laser beam powered by the current high-power blue laser diode. it would be great :)