AvaSpec-ULS3648 High-resolution Spectrometer

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When you’re looking for high resolution, then take a look at the AvaSpec-ULS3648. Featuring an electronic shutter, it can support integration times as short as 10 µs, making it ideal for CW laser measurements, among others.

Options include order-sorting filters to prevent second-order effects, a deep-UV detector coating for better sensitivity in the deep-UV range, and a detector collection lens to enhance overall sensitivity. Also, a wide range of slit sizes, gratings and fiber-optic entrance connectors are available.

Configurations with two to ten channel spectrometers are available. These give you the possibility of multiple simultaneous readouts or higher optical resolution in which several spectrometers are arrayed with each covering a short range with high resolution.

The connection to your computer is done through USB2 at 480 Mbps. This translates into 3.7 ms per scan data transfer speed. Of course it’s supplied with AvaSoft-Basic, USB cable and an extensive manual, including a quick start guide in four languages.

For more information, download the PDF brochure.

Technical

Optical Bench	ULS Symmetrical Czerny-Turner, 75 mm focal length
Wavelength range	200 - 1100nm
Resolution	0.05 - 20 nm, depending on configuration (see table)
Stray light	0.04-0.1%, depending on the grating
Sensitivity	160,000 counts/µW per ms integration time
Detector	CCD linear array, 3648 pixels
Signal/Noise	350:1
AD converter	16 bit, 1 MHz
Integration time	10 µs - 10 minutes
Interface	USB 2.0 high speed, 480 Mbps RS-232, 115.200 bps
Sample speed with on-board averaging	3.7 ms / scan
Data transfer speed	3.7 ms / scan (USB2) 750 ms / scan (RS-232)
Digital IO	HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, synchronization
Power supply	Default USB power, 350 mA Or with SPU2 external 12VDC, 350 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	220-400	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	145-100*	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	600-1100	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 3648 pixels will be used for the useable range.

Resolution

Slit size (µm)
Grating (lines/mm)	10	25	50	100	200	500
300	0.60-0.70*	1.10-1.30*	2.20-2.40*	4.60	9.00	20.0
600	0.30-0.36*	0.58-0.68*	1.17	2.20	4.50	10.0
830	0.25	0.48	0.93	1.7	3.40	8.0
1200	0.14-0.18*	0.30	0.62	1.08	2.20	5.0
1800	0.09-0.11*	0.18	0.36-0.40*	0.78	1.50	3.7
2400	0.07-0.09*	0.13-0.15*	0.26-0.32*	0.40-0.64*	1.10	2.7
3600	0.05-0.06*	0.10	0.19	0.4	0.8	2.0

*depends on the starting wavelength of the grating; the higher the wavelength, the bigger the dispersion and the better the resolution

Order Info

AvaSpec-ULS3648-USB2

Fiber-optic Spectrometer, 75 mm AvaBench, 3648 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
SLIT-XX-RS	Replaceable slit with SMA connector, specificy slit size XX=25, 50, 100, 200 or 500 µm. Only in combination with AvaSpec-ULS3648-USB2-RS
SLIT-XX-RS-FCPC	As SLIT-XX-RS, but with FC/PC connector
DUV	Deep UV detector coating >150 nm
DCL-UV/VIS-200	Detector collection Lens to enhance sensitivity, Quartz, 200-1100nm
SLIT-XX	Slit size, please specify XX = 10, 25, 50, 100, 200, 500 µm
OSF-YYY-3	Order sorting filter for reduction of 2^nd order effects, 3 mm thick, please specify YYY= 305, 385, 475, 515, 550, 600 nm
OSC	Order sorting coating with 600 nm long pass filter for BB (>350nm) and VB gratings in AvaSpec-ULS3648
OSC-UA	Order sorting coating with 350 and 600 nm linear variable filter for UA and VA gratings in AvaSpec-ULS3648
OSC-UB	Order sorting coating with 350 and 600 nm longpass filter for UB or BB (<350nm) gratings in AvaSpec-ULS3648
-FCPC	FC/PC fiber-optic connector