The AvaSpec-2048x14 Fiber Optic Spectrometers is a back-thinned type CCD spectrometer with high quantum efficiency and high UV sensitivity. The optical design is based on the AvaBench-75 symmetrical Czerny-Turner design with a 2048x14 pixels high UV sensitive CCD image sensor. The image sensor is used as a linear array of 2048 pixels binning the vertical 14 pixels to optimize efficiency. The spectrometer has a fiber optic entrance connector (standard SMA, others possible), collimating and focusing mirror and a diffractional grating. A choice of 16 different gratings with different dispersion and blaze angles enable applications in the 200-1160nm range. The AvaSpec-2048x14 comes with a 16 bit AD converter, and USB2.0 high speed interface. The AvaSpec- 2048x14 is especially suitable for measuring low light, fluorescence and UV- applications. Digital IO ports enable external triggering and control of shutter and pulsed light sources from the Avantes line of instruments.
The new AvaSpec-2048x14 has a USB2 interface with fast data sampling of 450 spectra per second and data transfer in 2.24 msec and supports analog in-and outputs as well. Optional Bluetooth® (-BT) communication and an SD card for on-board saving of spectra can be added. The AvaSpec-2048x14-USB2 runs on USB power and comes with AvaSoft-basic, a complete manual and USB interface cable. Multiple (up to 127) USB2 spectrometers with different detector types can be externally coupled (see section multi-channel spectrometers).
Technical Data
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Optical Bench
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Symmetrical Czerny-Turner, 75 mm focal length
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Wavelength range
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200 - 1160nm
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Resolution
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0.04 -20 nm, depending on configuration (see table)
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Stray light
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< 0.1%
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Sensitivity (AvaLight-HAL, 8 µm fiber)
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16.000 counts (16-bit AD)/µW -per ms integration time
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UV Quantum efficiency
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35-65% (200-300nm)
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Detector
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Back-thinned CCD image sensor 2048x14 pixels
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Signal/Noise
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500:1
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AD converter
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16 bit, 1.5 MHz
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Integration time
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2.24 ms - 10 min.
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Interface
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USB 2.0 high speed, 480 Mbps
RS-232, 115.200 bps
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Sample speed with on-board averaging
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2.24 msec /scan
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Data transfer speed
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2.24 msec /scan
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Digital IO
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HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, synchronization
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Power supply
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Default USB power, 350 mA
Or with SPU2 external 12VDC, 350 mA
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Dimensions, weight
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175 x 110 x 44 mm(1 channel), 716 grams
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Grating selection table for AvaSpec-2048x14
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Useable range
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Spectral range (nm)
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Lines/mm
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Blaze (nm)
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Order code
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UV/VIS/NIR
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200-1160**
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900**
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300
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300
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UA
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UV/VIS
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200-850
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520
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600
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300
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UB
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UV
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200-750
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250-220*
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1200
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250
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UC
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UV
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200-650
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165-145*
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1800
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UV
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UD
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UV
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200-580
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115-70*
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2400
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UV
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UE
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UV
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220-400
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70-45*
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3600
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UV
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UF
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UV/VIS
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250-850
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520
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600
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400
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BB
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VIS/NIR
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300-1160**
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800**
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300
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500
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VA
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VIS
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360-1000
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500
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600
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500
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VB
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VIS
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300-800
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250-200*
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1200
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500
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VC
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VIS
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350-750
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145-100*
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1800
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500
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VD
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VIS
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350-640
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75-50*
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2400
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VIS
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VE
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NIR
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500-1050
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500
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600
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750
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NB
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NIR
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500-1050
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220-150*
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1200
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750
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NC
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NIR
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600-1160**
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500**
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300
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1000
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IA
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NIR
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600-1160
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500
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600
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1000
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IB
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* 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 table (FWHM) for AvaSpec-2048x14
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Slit size (µm)
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Grating (lines/mm)
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10
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25
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50
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100
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200
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500
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300
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0.8
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1.4
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2.4
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4.3
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8.0
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20.0
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600
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0.4
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0.7
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1.2
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2.1
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4.1
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10.0
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1200
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0.1-0.2*
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0.2-0.3*
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0.4-0.6*
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0.7-1.0*
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1.4-2.0*
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3.3-4.8*
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1800
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0.07-0.12*
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0.12-0.21*
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0.2-0.36*
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0.4-0.7*
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0.7-1.4*
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1.7-3.3*
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2400
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0.05-0.09*
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0.08-0.15*
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0.14-0.25*
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0.3-0.5*
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0.5-0.9*
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1.2-2.2*
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3600
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0.04-0.06*
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0.07-0.10*
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0.11-0.16*
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0.2-0.3*
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0.4-0.6*
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0.9-1.4*
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*depends on the starting wavelength of the grating; the higher the wavelength, the bigger the dispersion and the better the resolution
Ordering Information
| AvaSpec-2048x14-USB2 |
Fiber Optic Spectrometer, 75 mm Avabench, 2048x14 pixel back-thinned CCD detector, USB powered high speed USB2 interface, incl AvaSoft-Basic, USB interface cable, specify grating, wavelength range and options |
| AvaSpec-2048x14-SPU2 |
Fiber Optic Spectrometer, 75 mm Avabench, 2048x14 pixel back-thinned CCD detector, high speed USB2 interface, incl. switch for USB power or external power for RS232/BT, AvaSoft-Basic, USB interface cable, specify grating, wavelength range and options |
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| Options |
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| -SPU-BT |
Bluetooth® interface for USB2 platform only, including antenna and switch |
| SDXXX |
Internal XXX MB SD card for on board data saving, for USB2 platform only |
| SLIT-XX |
Slit size, please specify XX = 10, 25, 50, 100, 200, 500 µm |
| OSF-YYY |
Order sorting filter for 2nd order effects filtering, please specify YYY= 385, 475, 515, 550, 600 nm |
| OSC |
Order sorting coating with 590nm long pass filter for VA, BB (>350nm) and VB gratings in AvaSpec-2048x14 |
| OSC-UA |
Order sorting coating with 350 and 590nm longpass filter for UA gratings in AvaSpec-2048 |
| OSC-UB |
Order sorting coating with 350 and 590nm longpass filter for UB or BB (<350nm) gratings in AvaSpec-2048x14 |
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