Ocean Optics LIBS2500plus - Manual (Page 15)

1: Introduction
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LIBS Spectrometer Channels (A-G)
Channel Description
LIBS-CH-A Spectrometer channel with 200-305 nm wavelength range
LIBS-CH-B Spectrometer channel with 295-400 nm wavelength range
LIBS-CH-C Spectrometer channel with 390-525 nm wavelength range
LIBS-CH-D Spectrometer channel with 520-635 nm wavelength range
LIBS-CH-E Spectrometer channel with 625-735 nm wavelength range
LIBS-CH-F Spectrometer channel with 725-820 nm wavelength range
LIBS-CH-G Spectrometer channel with 800-980 nm wavelength range
Note: Channels do NOT have to be consecutive
Laser Requirements for LIBS2500plus
You can supply your own Q-switched laser (from our certified list), or you can purchase one through
Ocean Optics. Laser requirements include a low-divergence laser beam (a tight focus is required to
achieve a spark), an active electro-optic Q-switch, and external triggering and synchronization capability
for the laser flashlamp and Q-switch.
We recommend the ULTRA CFR Nd:YAG laser from Big Sky Laser Technologies
(
www.bigskylaser.com/compactseries.html ). The ULTRA CFR was used when testing prototypes of the
LIBS2500plus. The rugged and field-portable ULTRA CFR delivers Q-switched pulses at 1.06 µm, with
variable repetition rates from 1 to 20 Hz. At 1.06 µm, the laser has a pulse stability of ±3%.
We also offer the Crossfire™ double-pulsed laser system in which two laser pulses are used with very
short (0.1–5 µs) inter-pulse spacing. The Crossfire is the backbone of a flexible LIBS system that can be
configured for single or dual pulse operation, quickly and with high repeatability. This enables users to
apply and compare both analytical methods and to reproduce many set-ups referenced in existing
publications. Timing between laser pulses is controlled via Crossfire software or through the
spectrometer(s). Imaging and targeting of samples is supported by means of the on-board video
microscope and electronics controlled via the Crossfire software. (See
http://www.photon-
machines.com for more information.)