The SHERLOC instrument is located at the end of the robotic arm on NASA's Mars 2020 rover. SHERLOC (short for Scanning Habitable Environments with Raman & Luminescence for Organics and Chemicals) is a spectrometer that will provide fine-scale imaging and use an ultraviolet laser to determine fine-scale mineralogy and detect organic compounds on Mars. https://photojournal.jpl.nasa.gov/catalog/PIA23621
Album Mars_2020_Perseverance