M Squared Lasers Limited

Iti Scotland—scottish Enterprise

Gordon Robertson

Gareth Thomas Maker

Graeme Peter Alexander Malcolm

Graeme Malcolm

Graeme Peter Malcolm

An infrared detection system comprises the following elements. A laser source provides radiation for illuminating a target (). This radiation is tuned to at least one wavelength in the fingerprint region of the infrared spectrum. A detector () detects radiation backscattered from the target (). An analyser determines from at least the presence or absence of detected signal in said at least one wavelength whether a predetermined volatile compound is present. An associated detection method is also provided. In embodiments, the laser source is tunable over a plurality of wavelengths, and the detector comprises a hyperspectral imaging system. The laser source may be an optical parametric device has a laser gain medium for generating a pump beam in a pump laser cavity, a pump laser source and a nonlinear medium comprising a ZnGeP(ZGP) crystal. On stimulation by the pump beam, the ZnGeP(ZGP) crystal is adapted to generate a signal beam having a wavelength in a fingerprint region of the spectrum and an idler beam having a wavelength in the mid-infrared region of the spectrum. The laser gain medium and the ZnGeP(ZGP) crystal are located in the pump wave cavity.

Long wavelength infrared detection and imaging with long wavelength infrared source

An infrared detection system comprises the following elements. A laser source provides radiation for illuminating a target (). This radiation is tuned to at least one wavelength in the fingerprint region of the infrared spectrum. A detector () detects radiation backscattered from the target (). An analyzer determines from at least the presence or absence of detected signal in said at least one wavelength whether a predetermined volatile compound is present. An associated detection method is also provided. In embodiments, the laser source is tunable over a plurality of wavelengths, and the detector comprises a hyperspectral imaging system. The laser source may be an optical parametric device has a laser gain medium for generating a pump beam in a pump laser cavity, a pump laser source and a nonlinear medium comprising a ZnGeP2 (ZGP) crystal. On stimulation by the pump beam, the ZnGeP2 (ZGP) crystal is adapted to generate a signal beam having a wavelength in a fingerprint region of the spectrum and an idler beam having a wavelength in the mid-infrared region of the spectrum. The laser gain medium and the ZnGeP2 (ZGP) crystal are located in the pump wave cavity.

An Mvalue beam profiling apparatus and method is described. The Mvalue beam profiler comprises an optical axis defined by a focussing lens assembly and a detector, wherein the focussing lens acts to create an artificial waist within an optical field propagating along the optical axis. The beam profiler also comprises a multiple blade assembly having a first set of blades located at an artificial waist position and a second set of blades longitudinally separated along the optical axis from the artificial waist position. The multiple blade assembly therefore provides a means for selectively passing the blades through the location of the optical axis. Employing these measured widths allows for the Mvalue of the optical field to be determined.

Beam profiler

The invention provides an apparatus and a method that reduces fluid loss from a cask during a maturation process by sealably enclosing the cask in a vessel that provides an expansion volume to receive fluid vapor from the cask, a monitoring system and a method that monitors fluid loss from a cask during a maturation process using a light source and a detector to determine the presence of fluid vapor in the vicinity of the cask, a corresponding system for controlling a maturation process in which environmental conditions are controlled, and a cask leak testing system and method making use of the above.

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Scotland, United Kingdom

Gordon Robertson