Laser Induced Breakdown Spectroscopy Laboratory

Laser-Induced Breakdown Spectroscopy (LIBS) Laboratory

Laser source – Minilite-IITM (Continuum Inc.)

• Wavelength: 1064 nm
• Maximum energy/pulse: 48 mJ
• Pulse width: 7 ns
• Repetition rate: 1-15 Hz

Sampling accessory – both in Mars environmental Chamber and under Earth ambient conditions

• Excitation laser spot size: ~ 100 µm
• Collecting optical fiber: UV enhanced bare optical fiber of 230 µm Ø
• Collection parameters: 45° at ~10 mm distance
• Viewing imager
• GigETM video camera (Edmund Optics)
• 10x Infinititube™ (Edmund Optics)
• OFR 5x Microscope Objective
• Spatial resolution 1.05 um/pixel
• Field of View: 1200 μm × 1100 μm

Spectrograph — Mechelle 5000TM (Andor Company)

• Spectral range: 200 – 975 nm
• Spectral resolution: FWHM of 0.04 nm at 200 nm or 0.1 nm at 500 nm
• ICCD detector – Andor iStarTM

​Sample preparations:

• Powder sample — the be pressed in 1” Ø pellets
• Rock sample — no sample preparation needed