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Los Gatos Research Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS)
LGR manufactures the world's leading trace gas and isotope analyzers based on Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS).
LGR's OA-ICOS technology offers a number of advantages for gas analysis, whatever the application:
Parts-Per-Billion (ppb) Precision:
OA-ICOS avoids the expense and vulnerability of a sub-nanometer
opto-mechanical setup. This enables it to easily deliver
parts-per-billion precision (or better) quickly and in an easy-to-use
Wider Dynamic Range: OA-ICOS
directly measures absorption rather than only a cavity decay time.
Therefore it offers a linear response over a significantly wider
dynamic range than conventional CRDS (i.e. up to 100% mole fraction for
Best Performance: OA-ICOS
analyzer performance is not dependent on hyper-critical optical
alignment, whereas older cavity-based techniques (e.g., CRDS) require
sub-nanometer optical component alignment. This makes these older
techniques very vulnerable to degraded performance due to vibrations,
small physical shocks, and changes in temperature and pressure.
Field Serviced: OA-ICOS performance is orders of magnitude less sensitive to internal alignment,
so our rugged instruments are robust and reliable. And designed with
simplicity in mind, in the rare instance that repair is necessary; LGR instruments may be easily serviced on site by anyone.
Better Value: OA-ICOS analyzer
performance is completely unaffected by any minor shifts in optical
alignment. This enables the use of simpler, lower-cost components and
fewer feedback control systems, as well as simplifying our assembly
Minimal Downtime: OA-ICOS technology does not require ultra-precise
optical alignment. This means that a minimally trained user can easily
remove a cavity mirror, if necessary, and then clean and replace it in
only minutes, with no impact on performance or expensive returns to the
For more detail on the LGR OA-ICOS technology, contact us or see the LGR web site.