HIGH-SENSITIVITY COMPACT SPECTROMETER
Model SC125
FEATURES
The compact high-sensitivity spectrometer SC125 is developed for low light applications such as measurements of Raman scattering, fluorescence, etc., that require especially high sensitivity or enhanced specifications in the UV spectral range.
UP-TO-DATE MODEL BASED ON BACK-THINNED ARRAYS FOR OPERATION WITH LOW SIGNALS
ENHANCED UV SENSITIVITY
MONOLITHIC HOUSING FOR OPTIMUM STABILITY
INTERNAL LIGHT TRAPS TO REDUCE STRAY LIGHT
FLEXIBLE CONFIGURATION, INCLUDING A CHOICE OF DIFFRACTION GRATINGS, SPECTRAL RANGES AND RESOLUTIONS TAILORED TO YOUR REQUIREMENT
USER-FRIENDLY INTERFACE COMPATIBLE WITH WINDOWS XP, WINDOWS 7, 8 AND 10
DESCRIPTION
The high-aperture optical bench of the SC125 has no moving parts and minimizes the number of reflective surfaces. The SC125 features a monolithic housing, thus ensuring long-time measurement stability. The case has internal fins (light traps) that allow reducing stray light – a typical problem of compact short-focal length instruments.
The SC125 may contain as a detector either one of two non-cooled Hamamatsu back-thinned CCD-arrays without a charge-storage section (back-thinned FFT CCD), operating in the binning mode. Both arrays have wide spectral range and excellent sensitivity in the UV (see below for the curves of each detector spectral sensitivity and their specifications). These two arrays differ in quantum efficiency, data reading rate, dynamic range, and in pixel active area size.
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The detector based on the S7030-1006 CCD-array is more sensitive, has lower noise, better values of dynamic range and uniformity. The detector based on the S10420-1106 CCD array is faster, has anti-blooming and, since it has a greater number of pixels and smaller pixel size, ensures better spectral resolution than the S7030-1006. The IMAGING Version (Optional) features an astigmatism compensator – cylindrical lens – installed after the entrance slit. This further enhances of system sensitivity.
Spectral curve of sensitivity of the back-thinned CCD detector model S10420-1106
Spectral curve of sensitivity of the back-thinned FFT-CCD detector model S7030-1006 in comparison with front-illuminated CCD with and without UV-coating
SPECIFICATIONS
SPECTROMETER MODEL
SC125- S10420
SC125- S11510
SC125- S7030
Spectral range, nm
200 — 1100
Focal length, mm
125
F/number
1 : 3,9
Entrance slit (one to choose)
fixed width: 14μm, 30μm and 50 μm
Spectral resolution
depends on selected diffraction grating (see table below)
CCD-detector model
S10420-1106
HamamatsuS11510-1106
HamamatsuS7030-1006
HamamatsuNumber of pixels
2068 × 70
1024 × 64
Number of active pixels
2048 × 64
1024 × 58
Pixel size, μm
14 × 14
24 × 24
Active area size, mm
28,672 × 0,896
24,6 × 1,4
Maximum spectral sensitivity, nm
500
700
650
Maximum quantum efficiency? %
>75
>90
Non-uniformity of sensitivity(1),%
±3
±3
Anti-blooming(2)
Yes
No
ADC Resolution
16bit, 250 kHz
16bit, 125 kHz
Mean-square reading noise, ADC counts
<4
<2
Dynamic range in the binning mode
~ 16000 : 1
~ 33 000 : 1
Exposure time
8,3 ms — 5 s (3)
8,2 ms — 2 s (3)
Frame processing time in the binning mode
9,39 ms
9,12 ms
Thermoelectric cooling
No
Operating temperature
10 – 30 °С
Computer interface
Full Speed USB
Triggering
internal / external
Optical input
— direct input through the SC125 input slit
— Optical Fiber : 0.6 (0.4)mm diameter, 1m length, SMA-905 connectorDimensions, weight
158 × 182 × 74 мм; 2,2 кг
* Specifications are subject to change without notice.
1) Signal level — 50% of saturation.
2) anti-blooming – sensor’s feature eliminating overflow of charges from over-exposed pixels to the neighboring ones.
3) maximum storage time is deemed to be the time at which dark signal reaches 10% of the dynamic range at the ambient temperature +25°С
RECOMMENDATIONS FOR CHOOSING A DIFFRACTION GRATING
At the time of placing your order you should choose a grating lines density (i.e. spectral resolution of your instrument), as well as the spectral range for operation. For your convenience the table below lists the average values of grating dispersion, spectral resolution and multichannel array bandpass.
DIFFRACTION GRATINGS, LINES/MM
1800
1200
900
600
400
300
200
— possible spectral range of grating operation, nm
180-600
180-900
180-1100
180-1100
190-1100
200-1100
200-1100
— multichannel array bandpass (average), nm1)
1052)923)
1702)1453)
2302)2003)
3502)3003)
5402)4603)
7202)6203)
10002)9203)
— reciprocal linear dispersion (average), nm/mm1)
3.8
6.0
8.2
12.5
19.0
25.4
38.0
— spectral resolution (average), nm
0.162)0.223)
0.252)0.363)
0.342)0.53)
0.52)0.753)
0.82)1.13)
1.02)1.53)
1.62)2.33)
1) for 300nm wavelength.
2) for the SC125- S10420 model.
3) for the SC125- S7030 model.
EXAMPLE: If you are interested in the1200 lines/mm grating and the S10420-1106 detector (spectral resolution of 0.25nm), then you should choose the location of 170nm multichannel array bandpass within the possible 180-900nm spectral range of the grating. For instance, the SC125- S10420 spectrometer operating in the range of 250-420nm with 0.25nm resolution.
The values indicated in the table are calculated for 300nm wavelength. With increased wavelength, dispersion of a specific grating and multichannel array bandpass are slightly decreased and resolution is improved. Contact a SOLAR LS specialist for more precise calculation of parameters for your instrument.
商品属性 [波长范围] 200-1100nm