cas 120-hr

Very High Resolution Array Spectroradiometer For Narrow Band Emitters Measurement -Laser Diodes

CAS 120HR spectrometer is built and designed for the measurement of narrow band emitters, e.g. laser diodes. The CAS 120-HR combines high spectral resolution and short testing times for sophisticated and price-sensitive production and laboratory applications. The high resolution CAS 120-HR is based on Instrument Systems’ high-performance spectroradiometer CAS 120.

The CAS 120-HR models achieve very high spectral resolutions down to 0.2 nm (0.05 nm data point interval) for a spectral measuring range of 80 nm (see figure below). Measuring ranges of 120 and 160 nm result in spectral resolutions of 0.3 and 0.4 nm, respectively.

The CAS 120-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.

Connect the CAS 120-HR 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.


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

CAS 120-HR Spectroradiometer

  • High resolution down to 0.2 nm FWHM, 0.05 nm data point interval
  • High-performance and cost-effective for production and laboratory
  • Down to 4 ms integration time
  • Integrated density filter wheel

CAS 120-HR High Resolution Array Spectroradiometer

ModelCAS 120-HR High Resolution Array Spectroradiometer
Spectral Range ¹⁾800 ~ 1000 nm
DetectorBack-thinned back-illuminated CCD 
Number of pixels2048 x 16
Gratings1200, 1500, 1800 lines/mm
Measuring ranges (Typical80 ~ 160 nm
Spectral resolution (typical)0.2 ~ 0.4 nm
Data Point Interval (typical)0.05 ~ 0.10 nm
Wavelength Accuracy²⁾± 0.05 nm
Integration time4 msec ~ 20 sec 
Sensor dynamic range³⁾5500:01:00
Non-Linearity± 0.6%
Focal length, f number, gratingapprox 120mm, f/3.5, plane refrection grating
Filter wheelAvailable density filters: OD 0.5, 1, 1,5, 2, 2,5
Electrical Data
AD converter16 bit resolution
PC interfaceUSB 2.0
TriggeringInput: TLL ascending slope; output: 2 TTL outputs (software controlled), 1 TTL output with flash pulse
Baseline noise⁴⁾±400 counts or  ±2.5%
Dimension (H x W x D mm)147 x 343 x 317 mm
Power supplyWide-range input 100 VAC to 240 VAC 50/60 Hz
Power consumptionmax. 35 VA
Ambient temperature15 – 35 °C; relative humidity 70 % max., non-condensing
Weightapprox. 7 kg
Standards complainceIn 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 4 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).