AvaSpec-ULS2048 StarLine Versatile Fiber-optic Spectrometer

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It’s the workhorse of our spectrometer line-up: the AvaSpec-ULS2048. Used in many applications in the UV/VIS range, it is particularly useful in time-critical situations thanks to its exceptional response speed. Priced affordably, the AvaSpec-ULS2048 is the choice of many of our most demanding customers.

Options include a deep-UV detector coating for better performance in the deep-UV range, a detector collection lens to enhance sensitivity in the 200 to 1100 nm range and order-sorting filters to reduce second-order effects. Furthermore, the AvaSpec-ULS2048 is available with a wide range of slit sizes, gratings and fiber-optic entrance connectors.

The AvaSpec-ULS2048 is also available in dual or multi-channel versions (up to 10 spectrometers in a 19” rack), where all spectra are taken simultaneously.

Connection with your PC is done via USB2-connection, delivering a scan every 1.8 milliseconds. Integration time can be as short as 1.1 milliseconds up to a maximum of 10 minutes. It comes complete with AvaSoft-Basic software, USB cable and an extensive manual, including a quick start guide in four languages.

Technical

Optical Bench	Symmetrical Czerny-Turner, 75 mm focal length
Wavelength range	200 - 1100 nm
Resolution	0.05 - 20 nm, depending on configuration (see table)
Stray-light	0.04 - 0.1%, depending on the grating
Sensitivity	310,000 counts/µW per ms integration time
Detector	CCD linear array, 2048 pixels
Signal/Noise	200:1
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	Default USB power, 350 mA or with SPU2 external 12VDC, 150 mA
Dimensions, weight	175 x 110 x 44 mm (1 channel), 716 grams

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	0.80-0.90*	1.10-1.20*	2.30	4.60	9.00	20.0
600	0.40-0.50*	0.63	1.15	2.31	4.50	10.0
830	0.28	0.40	0.80	1.60	3.20	8.0
1200	0.18-0.22*	0.29	0.61	1.18	2.20	5.4
1800	0.10-0.16*	0.19	0.35-0.42*	0.80	1.60	3.6
2400	0.08-0.11*	0.10-0.15*	0.28	0.55	1.10	2.7
3600	0.05-0.08*	0.10	0.18	0.38	0.75	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-ULS2048-USB2

Fiber-optic Spectrometer, 75 mm AvaBench, 2048 pixel CCD detector, USB powered, high-speed USB2 interface, incl. AvaSoft-Basic, USB interface cable.
Specify grating, wavelength range and options

Options

-SPU2	Incl. switch for USB powered USB2 or external power for RS-232
-RS	Replaceable slit
DUV	Deep UV detector coating >150 nm
DCL-UV/VIS	Detector collection Lens to enhance sensitivity, Quartz, 200-1100nm
SLIT-XX	Slit size, please specify XX = 10, 25, 50, 100, 200, 500 µm
SLIT-XX-RS	Replaceable slit with SMA connector, specificy slit size XX=25, 50, 100 or 200 µm. Only in combination with AvaSpec-ULS2048-USB2-RS
SLIT-XX-RS-FCPC	As SLIT-XX-RS, but with FC/PC connector
OSF-YYY-3	Order sorting filter for reduction of 2^nd order effects, 3 mm thick, please specify YYY= 385, 475, 515, 550, 600 nm
OSC	Order sorting coating with 600 nm long pass filter for VA, BB (>350nm) and VB gratings in AvaSpec-ULS2048
OSC-UA	Order sorting coating with 350 and 600 nm linear variable filter for UA gratings in AvaSpec-ULS2048
OSC-UB	Order sorting coating with 350 and 600 nm longpass filter for UB or BB (<350nm) gratings in AvaSpec-ULS2048
-FCPC	FC/PC fiber-optic connector