Easy & Reliable Characterisation

Spectral Industries history • TNO’s first instrument development project addressing Raman and LIBS was the combined instrument for ExoMars: 1st flagship mission of ESA’s Aurora program to Mars.

• It’s objectives were to search for signs of present or past life on Mars.

• TNO built fully functional spectrometer but it was never launched due to political reasons.

• Spectral Industries now takes over the spectrometer part of the Mars instrument for commercialization.

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Spectrometer design and specifications

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Specification Values Spectral range 250-820 nm

Resolution 0.1 nm F-number f/2 Slit size 25mu Wavelength stability <0,005 nm/K Stray light <10-4 Crosstalk <3x102 Size 149 x 90 x 125 mm (excl.

camera) Weight 1,13Kg (excl. camera) Camera Andor ISTAR, CMOS under

development

Spectrometer performance: Throughput

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Spectrometer Limiting

f/# NA

Diameter fiber (µm)

Slit spatial (µm)

Slit spectral (µm)

G (um^2.sr)

Relative G (to Spectral Industries)

Resolution @ 253 nm (pm)

Spectral Industries current 2,22 0,22 25 25 79,2 1,0 100

Spectral Industries (50 micron fiber)

2,22 0,22 50 317,0 4,0 220

Spectral Industries (slit) 2,22 0,22 125 50 1009,0 12,7 100

LTB 10 0,05 40 9,9 0,1 20

Andor (slit) 7 0,07 50 200 160,5 2,0 240

Andor (50 micron fiber) 7 0,07 50 31,5 0,4 60

Catalina Scientific 3,3 0,15 9 9 5,9 0,1 20

Ocean Optics 4 0,12 10 10 4,9 0,1 100

Spectral Industries spectrometer is 6 times more light sensitive then nearest compatible and 100 times more sensitive then most alternatives.

Spectrometer performance: Resolution • FWHM resolution @ 257nm = 150pm.

• This is slightly bigger as the nominal design, due to the blurring of the ICCD.

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Spectrometer performance: Temperature

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Wavelength shift: <0,005 nm/K. Lowest shift for a commercial available echelle spectrometer

Spectrometer performance: Dynamic range • Maximum signal just before saturation: 96.8700 counts.

• Noise: ~100 counts.

• Dynamic range: 968700/100=9.687

• 2-5 times higher dynamic range as linear array camera’s.

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Spectrometer performance: Stray light • Stray light analysis without taking into account AR coated optics.

• Stray light: 10-4.

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Spectrometer performance: Crosstalk • Black lines in the image indicate the center of the two closest echelle orders.

• Red area is a spectral line.

• Peak height vs. background level 5 pixels away from next order center: 3x102.

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Spectrometer status • Prototype ready. Production can start in 4 months.

• UV version in development. (Spectral range: 175-500nm, resolution: 50pm)

• Translate image to spectrum software available in Matlab with user friendly GUI.

• Calibration software available that involves manual actions.

• CMOS camera to replace ICCD is under development.

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Spectral Industries benefits • High throughput echelle spectrometer: higher etendue AND larger slit.

• Unique combination of high bandwidth and high resolution in one instrument.

• Our LIBS engine: Integrated easy to use combination of spectrometer, camera, laser and software.

• Highly robust design.

• Possibility to combine Raman and LIBS instrument: both molecular and elemental information from one instrument.

• Knowledge about conveyor belt integration.

• Experience with portable applications.

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Spectrometer status • Prototype ready. Production can start in 4 months.

• UV version in development.

• Translate image to spectrum software available in Matlab with user friendly GUI.

• Calibration software available that involves manual actions.

• CMOS camera to replace expensive and bulky ICCD is under development.

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Spectral Industries benefits • High throughput echelle spectrometer: higher etendue AND larger slit.

• Unique combination of high bandwidth and high resolution in one instrument.

• Our LIBS engine: Integrated easy to use combination of spectrometer, camera, laser and software.

• Highly robust design.

• Possibility to combine Raman and LIBS instrument: both molecular and elemental information from one instrument.

• Knowledge about conveyor belt integration.

• Experience with portable applications.

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Spectral Industries contact

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Spectral Industries BV Olof Palmestraat 14

2616 LR Delft The Netherlands www.spectralindustries.com

Point of contact: Dr. Ir. Marijn Sandtke T: +31(0)888666473 M: +31(0)611783180

E: m.sandtke@spectralindustries.com