Schematic diagram
S1: Entrance slit M1: Plane mirror
M2 and M3: Spherical mirrors
G: Grating S2: PMT
M4: Folding mirror S3: CCD
Display panel of PMT software
(Click figure to enlarge)
Measured Hg spectrum using PMT
(Click graph to enlarge)
Display panel of CCD software
(Click figure to enlarge)
Measured spectrum of Sodium lamp
(Click graph to enlarge)
PMT measured spectrum of Hydrogen-Deuterium lamp around 656 nm
(Click graph to enlarge)
CCD measured spectrum of Hydrogen-Deuterium lamp around 656 nm
(Click graph to enlarge)
Note: computer not included
Features
Replaceable gratings for different spectral range and resolution needs
Modular structure
Two detectors included (photomultiplier and CCD)
Optional fiber optic adapters and cuvette holders
Introduction
This spectrometer is designed to help students understand the concepts of light and wave phenomena and learn how a grating spectrometer/monochromator works. By replacing the default grating in the spectrometer with a different grating, the spectral range and resolution of the spectrometer can be altered. The modular structure provides flexible solutions for spectral measurements under photomultiplier (PMT) and CCD modes, respectively, selected with a mechanical toggle switch on the spectrometer. In addition, it is a valuable analytical tool for the studies and characterizations of optical filters and light sources. By dismounting the CCD device from the machine, it can be configured as a monochromator with high wavelength accuracy. This instrument uses a sine mechanism for wavelength scanning.
Using optional cuvette holders, absorbance of various samples in a standard cuvette can be measured; using optional fiber optic adapters, both entrance and exit slits of the spectrometer can be converted to accommodate fiber optic devices. To calibrate the spectrum of a selected work window in CCD mode, at least two standard spectral lines are needed within the spectral range of the work window.
Specifications
| Description | Specifications |
| Focal Length | 500 mm |
Wavelength Range | Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm |
| Slit Width | 0~2 mm adjustable with a reading resolution of 0.01 mm |
| Relative Aperture | D/F=1/7 |
Grating | Grating A*: 2400 lines/mm; Grating B:1200 lines/mm |
| Blazed Wavelength | 250 nm |
Wavelength Accuracy | Grating A: ± 0.2 nm; Grating B: ± 0.4 nm |
Wavelength Repeatability | Grating A: ≤ 0.1 nm; Grating B: ≤ 0.2 nm |
| Stray Light | ≤ 10 -3 |
Resolution | Grating A: ≤ 0.06 nm; Grating B: ≤ 0.1 nm |
| Photomultiplier Tube (PMT) | |
Wavelength Range | Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm |
| CCD | |
| Receiving Unit | 2048 cells |
Spectral Response Range | Grating A: 300 ~ 660 nm; Grating B: 300 ~ 800 nm |
| Integration Time | 88 steps (each step: approximately 25 ms) |
| Filter | White filter: 320~ 500 nm; yellow filter: 500~ 660 nm |
| Dimensions | 560×380×230 mm |
| Weight | 30 kg |
| Software | Compatible with Windows 10/11 |
* Grating A is the default grating pre-installed in spectrometer.
Parts List
| Description | Qty |
| Grating Monochromator | 1 |
| Power Control Box | 1 |
| Photomultiplier Receiving Unit | 1 |
| CCD Receiving Unit | 1 |
| USB Cable | 1 |
| Filter Set | 1 |
| Power Cord | 1 |
| Signal Cable | 2 |
| Software CD | 1 |
| Optional Cuvette Holder with Dovetails (p/n: DF-1) | 1 |
| Optional Cuvette Holder with Fiber Optic Connectors (p/n: DF-3) | 1 |
| Optional Fiber Optic Adapter to Entrance Slit (p/n: FA-SMA-1) | 1 |
| Optional Fiber Optic Adapter to Exit Slit (p/n: FA-SMA-2) | 1 |
Schematic diagram
S1: Entrance slit M1: Plane mirror
M2 and M3: Spherical mirrors
G: Grating S2: PMT
M4: Folding mirror S3: CCD
Display panel of PMT software
(Click figure to enlarge)
Measured Hg spectrum using PMT
(Click graph to enlarge)
Display panel of CCD software
(Click figure to enlarge)
Measured spectrum of Sodium lamp
(Click graph to enlarge)
PMT measured spectrum of Hydrogen-Deuterium lamp around 656 nm
(Click graph to enlarge)
CCD measured spectrum of Hydrogen-Deuterium lamp around 656 nm
(Click graph to enlarge)
