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SM303 High Resolution Spectrometer

SM303 TE cooled Back-Thinned 1024 px array CCD spectrometer



  • - High Resolution optical bench
  • - Scientific-grade high performance
  • - Extremely low dark noise and stray light
  • - Wide Dynamic range and high signal to noise ratio
  • - High Ultra-Violet Quantum efficiency
  • - Flexible optical input direct to slit or via fiber
  • - Designed from the ground up for a wide range of applications
  • - High speed data acquisition
  • - Standard design allows up to 200 to 1050nm range


The SM303 is ideal for UV/VIS/NIR spectrometry that requires very high signal to noise ratio and/or high dynamic range, like fluorescence, Raman, LED property testing applications. The back-thinned CCD has excellent sensitivity in UV and allows deep UV application. Well designed housing allows up to 75nm measurement window within 200~1050nm for 0.2nm optical resolution with very low stray light. The TE cooled detector also help to measure very low light signal by reducing the noise level in long integration time.

NOTE: Please click SM303-HRS for the brochure file.

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- SM32Pro - Windows (32-bit/64-bit) based software for data acquisition and analysis

- Transmission, reflectance, and absorbance measurements

- Data export, zoom in and out, spectrum overlays, and many more features

- Color analysis tools included

- Signal average and integration time control

- DLL libraries available for easy user software development

- VC++ / VB / LabView / Matlab examples available




Hamamatsu S7031-1006 Back-Thinned CCD

Pixel: 1024 x 58
Sensing Pixel size: 24µm x 24µm
Sensitivity: ~ 0.065 counts/e-
Well depth: 300 Ke- (vertical), 600 Ke- (horizontal)
Quantum efficiency: > 90% @650nm, 65% @250nm
Cooling: One-stage TE-cooled °C

Spectral Resolution

0.2 - 7nm FWHM

Spectral Range

Full Range: 200 - 1050nm
UV Range: 200 - 450nm
VIS Range: 380 - 760nm
NIR Range: 550 - 1050nm

Spectrograph f#


Fiber Coupler

SMA905 or FC standard

Stray Light

< 0.01% @632nm (< 0.05% avg)

Dark Noise RMS

< 2 RMS counts @35ms

Signal to Noise Ratio

1000 : 1

min. Integration Time


Trigger mode

Free Run mode
S/W Trigger mode
H/W Trigger mode

Orders Sorting Filter

Longpass filter or linear variable filter installed per wavelength coverage

Computer Interface

USB 1.1 / 2.0 compatible

SDK Support

Visual C++, Visual Basic, LabView, Matlab


9.25 x 6.95 x 3.75 inches

(23.5 x 17.65 x 9.52cm)


8.16 lbs

(3.7 kg)

Slit Options

10, 25, 50, 100, 200, and 400µm

TE Cooling Temperature