The AvaSpec-ULS2048XL+ spectrometer delivers exceptional performance by combining high quantum efficiency with advanced high-speed communication capabilities.

Unlike conventional back-thinned CCD spectrometers featuring two-dimensional arrays, this model incorporates large, monolithic pixels measuring 14×500 microns. This design ensures superior efficiency in both the UV and the NIR range.

Key Benefits

  • Exceptional sensitivity in the UV & NIR range
  • Large monolithic pixels
  • Improved image lag up to 10 times*
  • Ultra-fast integration times (2 microseconds)
  • High-speed communication
  • Electronic shutter
  • Detector collection lens to boost sensitivity
  • Improved EMC shielding*
    *Compared to the ULS2048XL

Product Variations

To provide our customers with the best possible service, the ULS2048XL+ spectrometer is available in two product variations, including an OEM version. If you are looking for an integration solution with the OEM variant, Avantes offers a specifically designed DLL for seamless connection between our AvaSoft software and your proprietary software. This allows you to configure your processes with high process stability, optimized workflows, and enhanced reliability, ensuring maximum efficiency in your operations.

ULS2048XL+
Available with 2048 pixel detector, high-speed data transfer, and a replaceable slit to customize your throughput and resolution.

AvaSpec ULS2048XL

ULS2048XL+ OEM
Industrial OEM-version with a stainless steel electromagnetic compatible housing. Optimized for integration into your product or system.

AvaSpec ULS2048XL OEM small

Product Information

Optical bench Symmetrical Czerny-Turner design, 75 mm focal length
Wavelength range 190-1160 nm
Stray light <1%
Detector HAM S11155 Back thinned CCD image sensor 2048 pixels
Signal/noise 525:1
Dynamic range 14.500
Dark noise 5 cnts
AD converter 16-bit, 857KHz
Integration time 2 μs – 20 sec
Interface USB 3.0, Gigabit Ethernet
Data transfer speed 2,5ms/scan (with shortest integration time of 2μs)
Analog I/O 2 in, 2 out
Digital I/O HD-26 connector, 3 in, 12 out (including laser and strobe out), Trigger input
Power supply Default USB power, 5V, external power 5-12V
Temperature range 5-55 °C
Dimensions, weight 175 x 127 x 44,5 mm, 1180 grams
Use Useable range (nm) Spectral range (nm) Lines/mm Blaze (nm) Order code
UV/VIS/NIR 190-1160** 960** 300 300 UA
UV/VIS/NIR 190-1160** 900** 300 300/1000 UNA/DB
UV/VIS 190-850 520 600 300 UB
UV 190-750 250-220* 1200 250 UC
UV 190-650 165-145* 1800 UV UD
UV 190-580 115-70* 2400 UV UE
UV 190-400 70-45* 3600 UV UF
UV/VIS 250-850 520 600 400 BB
VIS/NIR 300-1160** 860** 300 500 VA
VIS 360-1000 500 600 500 VB
VIS 300-800 250-200* 1200 500 VC
VIS 350-750 145-100* 1800 500 VD
VIS 350-640 75-50* 2400 VIS VE
NIR 500-1050 500 600 750 NB
NIR 500-1050 220-150* 1200 750 NC
NIR 600-1160 350-300 830 800 SI
NIR 600-1160** 560** 300 1000 IA
NIR 600-1160 500 600 1000 IB

*Depends on the starting wavelength of the grating; the higher the wavelength, the bigger the dispersion and the smaller the range to select. **Special grating. Add on costs apply.

Slit size (µm) 10 25 50 100 200 500
FWHM in nm
300 lines/mm grating 1.4 1.5 2.5 4.8 9.2 21.3
600 lines/mm grating 0.75-0.80* 0.75-0.85* 1.2 2.4 4.6 10.8
830 lines/mm grating 0.42-0.48* 0.50-0.58* 0.93 1.7 3.4 8.5
1200 lines/mm grating 0.25-0.31* 0.37-0.43* 0.52-0.66* 1.1 2.3 5.4
1800 lines/mm grating 0.17-0.21* 0.26-0.32* 0.34-0.42* 0.8 1.5 3.6
2400 lines/mm grating 0.12-0.18* 0.18-0.24* 0.26-0.34* 0.44-0.64* 1.1 2.7
3600 lines/mm grating 0.09-0.12* 0.11-0.15* 0.19 0.4 0.8 1.8

The above values are average values. Due to optical properties, resolution will be better in the lower wavelengths than in the higher wavelength range.

AvaSpec-ULS2048XL+ Ultra-low stray-light fiber-optic spectrometer, 75 mm AvaBench, 2048 large 500 μm pixel black-thinned CCD detector, USB powered, high-speed USB3.0 and ETH interface, incl. AvaSoft-Basic, USB interface cable. Specify grating, wavelength range and (OEM) options.

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