Combining exceptional quantum efficiency with high-speed communication is the value proposition of the AvaSpec-ULS2048XL EVO spectrometer. Unlike many back-thinned CCD spectrometers with two-dimensional arrays, the ULS2048XL-EVO has large monolithic pixels of 14×500 microns with exceptional efficiency in the UV range, from 200 to 400 nm, and the NIR range, from 950 to 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.

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Product Information

Optical bench Ultra-low stray light (ULS) symmetrical Czerny-Turner, 75 mm focal length
Wavelength range 200-1160 nm
Resolution 0.09-20 nm, depending on configuration
Stray light <0.5%
Sensitivity in counts/µW per ms integration time 460,000
UV quantum efficiency 60% (200-300 nm)
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 cnts RMS
Dark noise 4.5 cnts RMS
Dynamic range 13,700
Data transfer speed 2.44 ms/scan (USB3)
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 g
Use Useable range (nm) Spectral range (nm) Lines/mm Blaze (nm) Order code
UV/VIS/NIR 200-1160** 960** 300 300 UA
UV/VIS/NIR 200-1100** 900** 300 300/1000 UNA-DB
UV/VIS 200-850 520 600 300 UB
UV 200-750 250-220* 1200 250 UC
UV 200-650 165-145* 1800 250 UD
UV 200-580 115-70* 2400 250 UE
UV 200-400 70-45* 3600 250 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 500 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. **Please note that not all 2048 pixels will be used for the useable range.

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 gratings 0.70-0.80* 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 1.6 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

*Depends on the starting wavelength of the grating; the higher the wavelength, the bigger the dispersion and the smaller the range to select

AvaSpec-ULS2048XL-EVO Ultra-low Stray-light Fiber-optic Spectrometer, 75 mm AvaBench, 2048 large 500 µm pixel back-thinned CCD detector, USB powered, high-speed USB3 and ETH interface, incl. AvaSoft-Basic, USB interface cable. Specify grating, wavelength range and options
PS-12V/2.08A External power supply, needed for operation in ETH mode
-RS Replaceable slit
DCL-UV/VIS-200 Detector Collection Lens to enhance sensitivity, Quartz, 200-1100 nm
SLIT-XX Slit size, please specify XX = 10, 25, 50, 100, 200 or 500 µm
SLIT-XX-RS Replaceable slit with SMA connector, specify slit size XX=25, 50, 100, 200 or 500 µm. Only in combination with AvaSpec-ULS2048XL-EVO-RS
SLIT-XX-RS-FCPC As SLIT-XX-RS, but with FC/PC connector
OSF-YYY Order-sorting filter for reduction of 2nd order effects, 1 mm thick, please specify YYY= 305, 385, 475, 515, 550 or 600 nm
OSC Order-sorting coating with 600 nm long-pass filter for VA, BB (>350 nm) and VB gratings in AvaSpec-2048XL, recommended with OSF-305
OSC-UA Order-sorting coating with 350 and 600 nm linear variable filter for UA gratings in AvaSpec-ULS2048XL
OSC-UB Order-sorting coating with 350 and 600 nm long-pass filter for UB or BB (<350 nm) gratings in AvaSpec-ULS2048XL
-FCPC FC/PC fiber-optic connector

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