CGS

The compact grating spectrometer CGS UV-NIR is in a class all of its own. Extremely compact, it is totally in its element when top performance is needed. If you want to measure with maximum quality and optimum efficiency, the CGS UV-NIR from Carl Zeiss is the right solution for you

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Product Info

The CGS UV-NIR grating spectrometer is designed for sophisticated measurement tasks and is suitable for numerous applications. Its compactness and the insensitivity to external influences allows it to be directly integrated into at-line, on-line and in-line inspection processes. The variable detector options (CCD or PDA) measure with optimum spectral efficiency to ensure high quality results.

Depending of the application, different variations are available:

Slit (as optical entrance) can be customized on request
Ready-to-use electronics
Blazed, flat-field grating
Spherical mirror for aberration reduction
Back-thinned CCD or PDA attached to the aluminium housing
Interfaces, processing software and support

benefits

design

Blazed, flat-field grating for light dispersion and imaging
Comprises an imaging grating, optical port and an uncooled back-thinned detector (CCD) or Si Photodiode array (PDA)
Electric shutter function that enable minimum integration times and ensure high sensitivity (CCD)
Extremely low noise resulting in high S/N even at low light levels (PDA)
Spectral pixel pitch of 0.4 nm/pixel (CCD) and 0.7 nm/pixel (PDA)
Spectral resolution performance better than 3 nm according the Rayleigh criterion
Precision SMA fiber connector with fixed entrance slit (available in various width) allow precise alignment of core fibers
All optical components attached to an aluminium housing

specifications

	CGS UV-NIR CCD	CGS UV-NIR PDA
Optical entrance	SMA-connector 50 µm optical slit (can be varied upon request) NA = 0.22 (homogeneous illumination of the acceptance angle) 600 µm mono-fiber interface recommended for customer	SMA-connector 40 µm optical slit (can be varied upon request) NA = 0.22 (homogeneous illumination of the acceptance angle) 600 µm mono-fiber interface recommended for customer
Grating	Flat-field, 528 l / mm (center) blazed for approx. 230 nm	Flat-field, 528 l / mm (center) blazed for approx. 230 nm
Sensor array	Hamamatsu S11156, Back-thinned CCD, 2048 pixel Height of element: 1 mm Pixel pitch: 14 µm	Hamamatsu S3903, 1024 pixel
Spectral range	190-1,000 nm	190-935 nm
Resolution (FWHM) with 50µm slit	UV-VIS: < 2.2 nm NIR: < 2.5 nm	UV-VIS: < 2.0 nm NIR: < 2.0 nm
Straylight (ASTM 387-04)	3 AU at 240 nm with deuterium lamp (absorption A10 of NaI)	3 AU at 240 nm with deuterium lamp (absorption A10 of NaI)
Integration time (depending from operation electronics)	min. 30 µs	min. 500 µs
Dimensions L x W x H	78 x 30 x 75 mm³	78 x 30 x 75 mm³

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