TriVista Triple Spectrometers
TriVista triple spectrometers are true research-grade instruments delivering performance and flexibility unmatched in the industry. At the heart of TriVista are industry leading Acton SpectraPro series spectrometers, known for superb resolution, stray light suppression, excellent imaging and ruggedness. Direct drive technology provides the ultimate in precision movement while rigid construction provides the rock solid accuracy and repeatability researchers have come to expect from Princeton Instruments.
TriVista can operate from 200 nm up to 2.2μm. Spectral resolution can be as low as 3 picometers over the entire range. Extreme stray light rejection allows Raman spectra to be captured as close as 5 wavenumbers from the Rayleigh line.
Features and Benefits at a Glance
Extreme stray light rejection
Allows detection of low frequency Raman bands.
Uncomparable resolution
Minute structural changes can be investigated
Modular design, operates as three
individual spectrometers or as
combinations of single and
double spectrometers
Easy configuration for multiple applications
Prorietry ARC2000 coating provides
3%-7% more reflectivitiy PER OPTIC
than any other system.
Higher throughput resulting in superior detection
capabilities.
Integrated operation through
intuitive, yet powerful software
interface
Easy experimental set-up, faster results.
Easy switching between additive and subtractive modes.
Multiple entrance and exit options
Allows connection to a large range of available accessories and detectors.
Offered with standard 0.5 meter or
0.75 meter configuration
Choice of systems to suit experimental requirements
Additive and Subtractive modes of TriVista
The TriVista spectrometer can be used in single, double and triple configurations. Single configuration (Fig 1A) means all three stages can be used simultaneously and independently for three different projects. Typically, the TriVista is utilized as a double or triple system (Fig 1B, C) when the light beam is passed sequentially through 2 or 3 stages and the gratings coherently move together with very high precision. Some common reasons researchers choose a double or triple system are the high spectral resolution and the high stray light rejection. These important parameters can be accomplished by utilizing different modes of TriVista operation:
1. Additive mode gives high spectral resolution and high linear dispersion.
2. Subtractive mode gives high stray light rejection.
Easy Switch between Additive and Subtractive Modes
The TriVista software enables the user to switch between additive and subtractive modes with ease. This is accomplished by changing the direction of grating’s rotation. In additive mode both gratings G1 and G2 synchronously rotate clockwise adding dispersion to each other. In subtractive mode grating G1 rotates clockwise but the grating G2 synchronously rotates counter-clockwise precisely canceling dispersive action of the grating G1.
Results accomplished with each mode of operation
Modes
Double Additive
Double Subtractive
Triple Additive
Triple Subtractive
Primary effect
High resolution
High stray light rejection
Best resolution
Best stray light rejection
Sec. effect
High stray light rejection (with
PMT and narrow slit S2,3)
-
High stray light rejection (with
PMT and narrow slit S2,3)
-
CCD
Y
N
Y
Y
PMT
Y
Y
Y
Y
Mode of Operation: Subtractive
Detector Used: Spec-10 Camera with 20 μm Pixel (Spec-10:100 or 400)
Gratings in
Subtractive 2nd
Stage
Grating in
Spectrograph
Stage
Total CCD
coverage
Total CCD
coverage
Bandwidth per
20 μm CCD pixel
Bandwidth per
20 μm CCD pixel
Min. Distance to
Rayleigh line
(l/mm)
(l/mm)
(cm-1)
(nm)
(cm-1)
(nm)
(cm-1)
900
900
860
25
1.445
0.036
12
900
1800
550
10.5
0.6
0.018
10
1800
1800
370
10.5
0.6
0.018
8
1800
2400
370
10.5
0.4
0.011
4
Mode of Operation: Additive
Detector Used: Spec-10 Camera with 20 μm Pixel (Spec-10:100 or 400)
Gratings in
Subtractive 2nd
Stage
Grating in
Spectrograph
Stage
Total CCD
coverage
Total CCD
coverage
Bandwidth per
20 μm CCD pixel
Bandwidth per
20 μm CCD pixel
Min. Distance to
Rayleigh line
(l/mm)
(l/mm)
(cm-1)
(nm)
(cm-1)
(nm)
(cm-1)
900
900
370
10.5
0.44
0.015
150
1800
1800
160
4
0.18
0.005
125
1800
2400
120
3
0.15
0.004
100
Mode of Operation: Additive
Detector Used: Single Point Detector
Gratings in
Additive 2nd Stage
Grating in
Spectrograph Stage
Resolution
Resolution
Min. Distance to
Rayleigh line
(l/mm)
(l/mm)
(cm-1)
(nm)
(cm-1)
900
900
0.5
0.015
6
1800
1800
0.3
0.005
3
1800
2400
0.2
0.004
2
Aperture, Transmission, and Resolution
System
TriVista 555
TriVista 557
TriVista 777
Mode
additive
subtractive
additive
subtractive
additive
subtractive
Focal Length (mm)
1.500
500
1.750
750
2.250
750
No. of Mirrors
10
10
10
10
10
10
No. of Gratings
3
3
3
3
3
3
Grating Size (mm)
64 x 84
64 x 84
64 x 84
64 x 84
64 x 84
64 x 84
Transmission (%)
(92% per mirror & 70% per grating)
15
15
15
15
15
15
Aperture
F/5.9
F/5.9
F/5.9
F/5.9
F/9.8
F/9.8
Resolution (nm)
(1800 gr/mm, 10 μm slits, at 500 nm)
0.005
0.015
0.0046
0.010
0.0033
0.010
Resolution (cm-1)
(1800 gr/mm, 10 μm slits, at 500 nm)
0.21
0.6
0.17
0.4
0.13
0.4
Overall Dimensions
TriVista 555: 3.23 ft long (985 mm) 1.97 ft wide (600 mm) 1.15 ft high (350 mm)
TriVista 557: 3.44 ft long (1050 mm) 2.62 ft wide (800 mm) 1.15 ft high (350 mm)
TriVista 777: 3.44 ft long (1050 mm) 2.62 ft wide (800 mm) 1.15 ft high (350 mm)
Weight
TriVista 555: ≈ 225 lbs (102 kg)
TriVista 557: ≈ 250 lbs (113 kg)
TriVista 777: ~ 300 lb s (136 kg)
Facilities
110 VAC @ 3 Amps max
商品属性 [光学分辨率] 0.21 cm-1 (A) 0.6 cm-1 (S) [Focal Length] 1500 mm (A) 500 mm (S) [波长范围] 200 nm up to 2.2μm