AvaSpec-ULS2048LTEC

AvaSpec-ULS2048LTEC
 
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Long integration times are generally equivalent to higher dark noise. Avantes' thermoelectrically cooled (TEC) spectrometer systems overcome this problem by cooling the detector. These recently redesigned instruments are equipped with triple-stage cooling, keeping your detector at an optimal 5 degrees Celsius (maximum -35°C difference from ambient temperature).

The detector cooling provides a significantly lower and more stable dark baseline and PRNU level. Dark noise is reduced by a factor of 2-3. This allows the ULS2048LTEC to be used in very low light conditions, such as fluorescence and Raman measurements. If needed, integration times of more than 5 seconds are possible.

The AvaSpec-ULS2048LTEC has an integrated temperature regulator, USB2.0 high-speed interface and two cooling fans to actively ventilate the heatsink of the Peltier cooling elements. The spectrometer power supply is integrated into the housing. The Replaceable Slit option is now also available for this spectrometer!

Technical

Optical Bench ULS symmetrical Czerny-Turner, 75 mm focal length
Wavelength range 200 - 1100 nm
Resolution 0.06 - 20 nm, depending on configuration (see table)
Stray-light 0.04 - 0.1%, depending on the grating
Sensitivity 470,000 counts/µW  per ms integration time
Detector CCD linear array, 2048 pixels
Temperature cooled CCD Max. ΔT = -35°C versus ambient
Time to stabilize

4 Minutes

Dark baseline improvement @ΔT=-35°C and it > 5 sec

> Factor 6

PRNU improvement @ΔT=-35°C and it > 5 sec >Factor 8
3 stage Peltier cooling internal Power supply@ΔT=-35°

5VDC, 3.0A

Signal/Noise 300:1
AD converter 16 bit, 2 MHz
Integration time 1.11 ms - 10 minutes
Interface USB 2.0 high speed, 480 Mbps
RS-232, 115,200 bps
Sample speed with on-board averaging 1.1 ms/scan
Data transfer speed 1.8 ms/scan (USB2)
430 ms/ scan (RS-232)
Digital IO HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, sync.
Power supply 100 - 240VAC, 50W
Dimensions, weight 250 x 179 x 144 mm, 3.6 kg

Gratings

Use Useable range Spectral range (nm) Lines/mm Blaze (nm) Order code
UV/VIS/NIR 200-1100** 900** 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 UV UD
UV 200-580 115-70* 2400 UV UE
UV 200-400 70-45* 3600 UV UF
UV/VIS 250-850 520 600 400 BB
VIS/NIR 300-1100** 800** 300 500 VA
VIS 360-1000 500 600 500 VB
VIS 300-800 250-200* 1200 500 VC
VIS 350-750 145-90* 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 600-1100** 500** 300 1000 IA
NIR 600-1100 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

Resolution

Slit size (µm)
Grating (lines/mm) 10 25 50 100 200 500
300 1.0 1.4 2.5 4.8 9.2 21.3
600 0.40-0.53* 0.7 1.2 2.4 4.6 10.8
830 0.32 0.48 0.93 1.7 3.4 8.5
1200 0.20-0.28* 0.27-0.38* 0.52-0.66* 1.1 2.3 5.4
1800 0.10-0.18* 0.20-0.29* 0.34-0.42* 0.8 1.6 3.6
2400 0.09-0.13* 0.13-0.17* 0.26-0.34* 0.44-0.64* 1.1 2.7
3600 0.06-0.08* 0.10 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.

Order Info

AvaSpec-ULS2048LTEC-USB2 Thermo-Electric Cooled Fiber-optic Spectrometer, 75 mm Ultra-Low Stray-light AvaBench, 2048L pixel 3-stage TE-cooled and regulated CCD detector, USB2 high-speed interface, incl. AvaSoft-Basic, USB cable, desktop housing.
Specify grating, wavelength range and options

Options


DUV Deep-UV detector coating >150 nm
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 
OSF-YYY-3 Order-sorting filter for reduction of 2nd order effects, 3 mm thick, please specify YYY= 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
OSC-UA Order-sorting coating with 350 and 600 nm long-pass filter for UA gratings
OSC-UB Order-sorting coating with 350 and 600 nm long-pass filter for UB or BB (<350 nm) gratings
-FCPC FC/PC fiber optic connector
- RS Replaceable Slit
SLIT-XX-RS Replaceable slit with SMA connector, specificy slit size XX=25, 50, 100 or 200 µm. 
SLIT-XX-RS-FCPC As SLIT-XX-RS, but with FC/PC connector

Downloads

folder AvaSoft  Spectroscopy Software
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