Optics.org
Optics.org
daily coverage of the optics & photonics industry and the markets that it serves
News
Menu
Curiosity's tunable laser spectrometer (click to enlarge)
Curiosity's tunable laser spectrometer actually features two different diode sources. An interband cascade (IC) laser built in-house at JPL is used to access the key methane absorption line at 3.27 microns. A Herriot cell is used to pass the laser through the gas sample more than 80 times - meaning that lower concentrations in the parts-per-billion range can be measured. Credit: NASA JPL.
Copyright © 2019 SPIE EuropeDesigned by Kestrel Web Services