NASA's Next Mars Rover to Zap Rocks With Laser

[RoDnSuE]

Info for all:yh:

NASA's Next Mars Rover to Zap Rocks With Laser - NASA Jet Propulsion Laboratory

Rod

 

[Bluefan]

I'd love to know what kind of laser they use, would it be a simple Q-switched flashlamp pumped YAG or something more fancy?

 

[RoDnSuE]

I would too. To vaporize rock, it would have to be pretty powerful.

 

[mod101]

Its probably an IR laser

In chemistry we use IR spectroscopy to learn more about unknown substances. UV-Visable Spectroscopy does exist but it does not give as much info as IR specs.

EDIT:
"An invisible beam from the laser set off a flash on a rock across the room. The flash was ionized gas, or plasma, generated by the energy from the laser exciting atoms in the rock. A spectrometer pointed at the glowing plasma recorded the intensity of light at different wavelengths for determining the rock's atomic ingredients."

Yeah this sounds almost exactly like IR spectroscopy

 

[Bluefan]

Except that the rock is ionised, and ions give different spectra. In this can it doesn't matter if it's IR or UV, as long as it ionises the rock, which then emits light by itself.