Combining exceptional quantum efficiency with high-speed is the value proposition of the AvaSpec-ULS2048XL EVO spectrometer. Unlike many back-thinned CCD spectro-meters, which have two dimensional arrays, the ULS2048XL-EVO has large monolithic pixels of 14x500 microns with exceptional efficiency in the UV, from 200-400 nm, and the NIR, from 950-1160 nm. The instrument also has an electronic shutter, which enables integration times as low as 2 microseconds. To further enhance sensitivity, a detector collection lens is available which improves sensitivity up to 60% when combined with larger core fibers
| Optical Bench |
ULS, Symmetrical Czerny-Turner, 75 mm focal length |
| Wavelength range |
200 - 1160nm |
| Resolution |
0.09 -20 nm, depending on configuration (see table) |
| Stray light |
< 0.5% |
| Sensitivity (counts/µW per ms int. time) |
460,000 counts |
| UV Quantum efficiency |
60% (200-300nm) |
| Detector |
Back-thinned CCD image sensor 2048 pixels |
| Signal/Noise |
525:1 |
| AD converter |
16 bit, 1 MHz |
| Integration time |
2 µs - 20 sec |
| Interface |
USB 3.0 high speed, 5 Gbps, Gigabit Ethernet 1 Gbps |
| Sample speed with store to RAM |
2.44 ms / scan |
| Readout Noise |
9.8 cnt RMS |
| Dark Noise |
4.5 cnt RMS |
| Dynamic Range |
13.700 |
| Data transfer speed |
2.44 ms / scan (USB3)
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| Digital IO |
HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, synchronization |
| Power supply |
Default USB power, 700 mA Or external 12VDC, 360 mA |
| Dimensions, weight |
175 x 127 x 44,5 mm(1 channel), 1180 grams |
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