High Resolution Array Spectroradiometers Model CAS 120-HR / CA-120B-HR

High Resolution Array Spectroradiometers CAS 120HR /CAS-120B-HR

The CAS 120-HR and CAS 120B-HR high resolution spectroradiometers are based on Instrument Systems’ high-performance array spectrometer CAS 120, a product line that has achieved extraordinary success around the world. The CAS 120-HR is particularly designed for the measurement of narrow band emitters, e.g. laser diodes. Therefore, the spectroradiometers combine the demands of high spectral resolution and short testing times for sophisticated and price-sensitive measurement tasks in production and laboratory environments.

All Instrument Systems High Resolution CAS 120-HR models are offered with a PTB traceable calibration. 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.


  • Spectral resolution down to 0.2 nm (0.12 nm for CAS 120B-HR) FWHM (0.05 nm data point interval)
  • Typical measuring ranges of 80, 120 and 160 nm within the spectral range from
    800 to 1000 nm (further spectral ranges < 800 nm 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
  • Software solutions for laboratory and production applications


  • System solutions particularly designed for testing narrow band emitters, e.g. laser
    diodes and VCSELs
  • Very accurate characterization of narrow band emitters with very short pulses in laboratory and production applications
  • Short testing times enable industrial quality control in the production line
 Ordering information:
High Resolution Array Spectroradiometers CAS 120 HR
Accessible spectral range800 ~ 1000nm ¹
DetectorBack-thinned back-illuminated CCD
Number of pixels2048 x 16
Gratings1200, 1500, 1800 lines/mm
Measuring ranges (typical)80 ~ `60 nm
Spectral resolution (typical)0.2 ~ 04 nm (0,12 nm for CAS 120B-HR)
Data point interval (typical)0.05 ~ 0.1 nm
Wavelength accuracy ²± 0.05nm
Integration time4 ms ~ 20 s
Sensor dynamic range³ 5500 : 1
Non-Linearity± 0.6%

¹ Further spectral ranges upon request

²Applies to Penray lamp or laser

³For a single acquisition with 4 ms integration time

Download PDF CAS120-HR

Download PDF CAS120B-HR

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