cas 140ct-hr

High Resolution Array Spectrometer For Narrow-Band Emitters

CAS 140CT-HR is particularly designed for the measurement of narrow band emitters, e.g. laser diodes and VSCEL. CAS 140CT-HR combines high spectral resolution and short testing times for sophisticated production and laboratory applications.

Instrument Systems CAS 140CT-HR models are offered with a PTB traceable calibration. They are factory-equipped with a USB interface and optionally available with PCIe interface for extended triggering possibility. The integrated density filter wheel and the dark shutter additionally facilitate fully automated measurements over an extremely broad detector signal range. The spectroradiometers can be operated with Instrument Systems’ SpecWin Pro software for advanced laboratory applications. In addition, they are compatible with DLL and LabVIEW drivers for creating proprietary programs and integration into production equipment.

The CAS 140CT-HR offers a selection of different gratings with 1200, 1500 and 1800 lines/mm. Typical measuring ranges of 80, 120 and 160 nm are available in the spectral range from 800 to 1000 nm. Further spectral ranges in the VIS are available upon request.


Narrow Band Emitters e.g. Laser Diodes and VCSEL  | Production Testing | Laboratory

CAS 140CT-HR Spectrometer

  • Spectral resolution down to 0.2 nm FWHM (0.08 nm data point interval)
  • Typical measuring ranges of 80, 120 and 160 nm customized within the spectral range from 800 to 1000 nm (further spectral ranges available on request)
  • High-end actively cooled CCD detector for utmost measuring sensitivity and stability
  • Integrated density filter wheel enables an extremely wide intensity measuring range
  • USB interface and PCIe interface (optional)
  • Software solutions for laboratory and production applications

CAS 140CT-HR Spectrometer

ModelCAS 140CT-HR High Resolution Array Spectroradiometer
Spectral Range ¹⁾800 ~ 1000 nm
DetectorBack-thinned back-illuminated CCD actively cooled to -10°C 
Number of pixels1024 x 128
Gratings1200, 1500, 1800 lines/mm
Measuring ranges (typical)80 ~ 160 nm
Spectral resolution (typical)0.2 ~ 0.4 nm
Data Point Interval (typical)0.08 ~ 0.16 nm
Wavelength Accuracy²⁾± 0.05 nm
Integration time9 ms – 65 s (PCIe); 10 ms – 65 s (USB)
Sensor dynamic range³⁾30000 : 1
Non-Linearity± 0.5%
Focal length, f number, gratingapprox 120mm, f/3.5, plane reflection grating
Filter wheelAvailable density filters: OD 0.5, 1, 1,5, 2, 2,5
Electrical Data
AD converter5 bit resolution
PC interfaceStandard: USB 2.0; optional: PCIe bus plug-in card 4) in place of USB 2.0
TriggeringInput: TLL ascending slope; output: 2 TTL outputs (software controlled), 1 TTL output with flash pulse
Baseline noise⁴⁾±60 counts or  ±0.4%
Dimension (H x W x D mm)192 x 330 x 348
Power supplyWide-range input 100 VAC to 240 VAC 50/60 Hz
Power consumptionmax. 50 VA
Ambient temperature15 – 35 °C; relative humidity 70 % max., non-condensing
Weightapprox. 10 kg
Standard ComplianceIn conformity with EN 61010-1:2002-08 (safety requirements governing electrical equipment for measurement, control and laboratory use)

¹⁾Further spectral ranges upon request.
²⁾ Applies to Penray lamp or laser.
³⁾ For a single acquisition with 10 ms integration time.
⁴⁾ At shortest integration time, without averaging and at 30,000 counts signal level. When averaged, this value improves (e.g. averaged over 9 times equals a threefold noise reduction)


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