A laser spectrometer is a device that uses lasers to measure the composition and properties of substances or materials. It can analyze the wavelengths of light to determine the chemical composition or identify specific molecules. Full definition
The rover's Sample Analysis at Mars (SAM) instrument that analyzes the soil and atmosphere around the rover using a mass spectrometer, a gas chromatograph and a tunable laser spectrometer to detect oxygen and carbon isotopes in carbon dioxide and methane samples to see if they are biochemical in origin. (businessinsider.com)
CCD camera on Raman Laser Spectrometer (Raman LIBS) which can detect the presence of chemical compounds including minerals and also specific types of «biomarker» chemicals indicative of past or present life (politics.co.uk)
For this purpose, they used the ISOWAT diode laser spectrometer specially developed by IMK for use on aircraft. (sciencedaily.com)